diff --git a/.gitignore b/.gitignore
index 9292dbb..287db4c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 ChangeLog
 *.pyc
 __pycache__/
+etc/accounts.yaml
 etc/tempest.conf
 etc/tempest.conf.sample
 etc/logging.conf
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 2edaddb..04ddfdf 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # Tempest documentation build configuration file, created by
 # sphinx-quickstart on Tue May 21 17:43:32 2013.
 #
diff --git a/releasenotes/notes/add-identity-v3-clients-as-a-library-d34b4fdf376984ad.yaml b/releasenotes/notes/add-identity-v3-clients-as-a-library-d34b4fdf376984ad.yaml
new file mode 100644
index 0000000..1af1939
--- /dev/null
+++ b/releasenotes/notes/add-identity-v3-clients-as-a-library-d34b4fdf376984ad.yaml
@@ -0,0 +1,6 @@
+---
+features:
+    - Define the identity v3 service client domains_client as a library.
+      Add domains_client to the library interface so the other
+      projects can use this module as a stable library without any
+      maintenance changes.
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index 72d5b18..ff84945 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -72,10 +72,9 @@
             block_migration = (CONF.compute_feature_enabled.
                                block_migration_for_live_migration and
                                not volume_backed)
-        body = self.admin_servers_client.live_migrate_server(
+        self.admin_servers_client.live_migrate_server(
             server_id, host=dest_host, block_migration=block_migration,
             **kwargs)
-        return body
 
     def _get_host_other_than(self, host):
         for target_host in self._get_compute_hostnames():
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index ce0adb4..33b9bef 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 from oslo_log import log as logging
-import six
 from testtools import matchers
 
 from tempest.api.compute import base
@@ -175,7 +174,7 @@
         # restore the defaults when the test is done
         self.addCleanup(self._restore_default_quotas, body.copy())
         # increment all of the values for updating the default quota class
-        for quota, default in six.iteritems(body):
+        for quota, default in body.items():
             # NOTE(sdague): we need to increment a lot, otherwise
             # there is a real chance that we go from -1 (unlimited)
             # to a very small number which causes issues.
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 23b16e7..206260f 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -72,8 +72,8 @@
             raise self.skipException("ram quota set is -1,"
                                      " cannot test overlimit")
         ram += 1
-        vcpus = 8
-        disk = 10
+        vcpus = 1
+        disk = 5
         flavor_ref = self.flavors_client.create_flavor(name=flavor_name,
                                                        ram=ram, vcpus=vcpus,
                                                        disk=disk,
@@ -93,7 +93,6 @@
         self.useFixture(fixtures.LockFixture('compute_quotas'))
         flavor_name = data_utils.rand_name("flavor")
         flavor_id = self._get_unused_flavor_id()
-        ram = 512
         quota_set = self.quotas_client.show_quota_set(
             self.tenant_id)['quota_set']
         vcpus = int(quota_set['cores'])
@@ -101,7 +100,8 @@
             raise self.skipException("cores quota set is -1,"
                                      " cannot test overlimit")
         vcpus += 1
-        disk = 10
+        ram = 512
+        disk = 5
         flavor_ref = self.flavors_client.create_flavor(name=flavor_name,
                                                        ram=ram, vcpus=vcpus,
                                                        disk=disk,
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index d7e01f0..d77ea90 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -139,15 +139,15 @@
                 test_utils.call_and_ignore_notfound_exc(
                     cls.servers_client.delete_server, server['id'])
             except Exception:
-                LOG.exception('Deleting server %s failed' % server['id'])
+                LOG.exception('Deleting server %s failed', server['id'])
 
         for server in cls.servers:
             try:
                 waiters.wait_for_server_termination(cls.servers_client,
                                                     server['id'])
             except Exception:
-                LOG.exception('Waiting for deletion of server %s failed'
-                              % server['id'])
+                LOG.exception('Waiting for deletion of server %s failed',
+                              server['id'])
 
     @classmethod
     def server_check_teardown(cls):
@@ -179,7 +179,7 @@
                 test_utils.call_and_ignore_notfound_exc(
                     cls.compute_images_client.delete_image, image_id)
             except Exception:
-                LOG.exception('Exception raised deleting image %s' % image_id)
+                LOG.exception('Exception raised deleting image %s', image_id)
 
     @classmethod
     def clear_security_groups(cls):
@@ -283,7 +283,7 @@
             volumes_client.wait_for_resource_deletion(volume_id)
         except lib_exc.NotFound:
             LOG.warning("Unable to delete volume '%s' since it was not found. "
-                        "Maybe it was already deleted?" % volume_id)
+                        "Maybe it was already deleted?", volume_id)
 
     @classmethod
     def prepare_instance_network(cls):
@@ -336,7 +336,7 @@
             waiters.wait_for_server_termination(cls.servers_client,
                                                 server_id)
         except Exception:
-            LOG.exception('Failed to delete server %s' % server_id)
+            LOG.exception('Failed to delete server %s', server_id)
 
     @classmethod
     def resize_server(cls, server_id, new_flavor_id, **kwargs):
diff --git a/tempest/api/compute/images/test_images_oneserver_negative.py b/tempest/api/compute/images/test_images_oneserver_negative.py
index 1c9b3f1..cd71de7 100644
--- a/tempest/api/compute/images/test_images_oneserver_negative.py
+++ b/tempest/api/compute/images/test_images_oneserver_negative.py
@@ -47,8 +47,8 @@
             waiters.wait_for_server_status(self.servers_client, self.server_id,
                                            'ACTIVE')
         except Exception:
-            LOG.exception('server %s timed out to become ACTIVE. rebuilding'
-                          % self.server_id)
+            LOG.exception('server %s timed out to become ACTIVE. rebuilding',
+                          self.server_id)
             # Rebuild server if cannot reach the ACTIVE state
             # Usually it means the server had a serious accident
             self._reset_server()
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 0a94d5e..0334eff 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -350,7 +350,7 @@
                 else:
                     LOG.warning("Deletion of oldest backup %s should not have "
                                 "been successful as it should have been "
-                                "deleted during rotation." % oldest_backup)
+                                "deleted during rotation.", oldest_backup)
 
         image1_id = data_utils.parse_image_id(resp['location'])
         self.addCleanup(_clean_oldest_backup, image1_id)
diff --git a/tempest/api/compute/servers/test_server_addresses.py b/tempest/api/compute/servers/test_server_addresses.py
index d31b6f8..549ba03 100644
--- a/tempest/api/compute/servers/test_server_addresses.py
+++ b/tempest/api/compute/servers/test_server_addresses.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
-
 from tempest.api.compute import base
 from tempest import test
 
@@ -50,7 +48,7 @@
         # We do not know the exact network configuration, but an instance
         # should at least have a single public or private address
         self.assertGreaterEqual(len(addresses), 1)
-        for network_name, network_addresses in six.iteritems(addresses):
+        for network_name, network_addresses in addresses.items():
             self.assertGreaterEqual(len(network_addresses), 1)
             for address in network_addresses:
                 self.assertTrue(address['addr'])
diff --git a/tempest/api/compute/test_extensions.py b/tempest/api/compute/test_extensions.py
index 6e57aff..d171cd5 100644
--- a/tempest/api/compute/test_extensions.py
+++ b/tempest/api/compute/test_extensions.py
@@ -42,7 +42,7 @@
             raise self.skipException('There are not any extensions configured')
         # Log extensions list
         extension_list = map(lambda x: x['alias'], extensions)
-        LOG.debug("Nova extensions: %s" % ','.join(extension_list))
+        LOG.debug("Nova extensions: %s", ','.join(extension_list))
 
     @test.idempotent_id('05762f39-bdfa-4cdb-9b46-b78f8e78e2fd')
     @test.requires_ext(extension='os-consoles', service='compute')
diff --git a/tempest/api/compute/test_live_block_migration_negative.py b/tempest/api/compute/test_live_block_migration_negative.py
index f072b81..7853962 100644
--- a/tempest/api/compute/test_live_block_migration_negative.py
+++ b/tempest/api/compute/test_live_block_migration_negative.py
@@ -37,10 +37,9 @@
 
     def _migrate_server_to(self, server_id, dest_host):
         bmflm = CONF.compute_feature_enabled.block_migration_for_live_migration
-        body = self.admin_servers_client.live_migrate_server(
+        self.admin_servers_client.live_migrate_server(
             server_id, host=dest_host, block_migration=bmflm,
             disk_over_commit=False)
-        return body
 
     @test.attr(type=['negative'])
     @test.idempotent_id('7fb7856e-ae92-44c9-861a-af62d7830bcb')
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index 1edadef..30549ec 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -68,8 +68,8 @@
                                            volume_id, 'available')
         except lib_exc.NotFound:
             LOG.warning("Unable to detach volume %s from server %s "
-                        "possibly it was already detached" % (volume_id,
-                                                              server_id))
+                        "possibly it was already detached", volume_id,
+                        server_id)
 
     def _attach_volume(self, server_id, volume_id, device=None):
         # Attach the volume to the server
diff --git a/tempest/api/image/v1/test_image_members.py b/tempest/api/image/v1/test_image_members.py
index 50f0926..9c211ef 100644
--- a/tempest/api/image/v1/test_image_members.py
+++ b/tempest/api/image/v1/test_image_members.py
@@ -14,6 +14,7 @@
 
 
 from tempest.api.image import base
+from tempest.lib import exceptions as lib_exc
 from tempest import test
 
 
@@ -54,3 +55,5 @@
         body = self.image_member_client.list_image_members(image_id)
         members = body['members']
         self.assertEqual(0, len(members), str(members))
+        self.assertRaises(
+            lib_exc.NotFound, self.alt_img_cli.show_image, image_id)
diff --git a/tempest/api/image/v1/test_images.py b/tempest/api/image/v1/test_images.py
index 9fbdcd7..0caaa67 100644
--- a/tempest/api/image/v1/test_images.py
+++ b/tempest/api/image/v1/test_images.py
@@ -36,7 +36,7 @@
         msg = ("The container format and the disk format don't match. "
                "Container format: %(container)s, Disk format: %(disk)s." %
                {'container': container_format, 'disk': disk_format})
-        raise exceptions.InvalidConfiguration(message=msg)
+        raise exceptions.InvalidConfiguration(msg)
 
     return container_format, disk_format
 
@@ -54,7 +54,6 @@
                                   disk_format=disk_format,
                                   is_public=False,
                                   properties=properties)
-        self.assertIn('id', image)
         self.assertEqual('New Name', image.get('name'))
         self.assertFalse(image.get('is_public'))
         self.assertEqual('queued', image.get('status'))
@@ -77,7 +76,6 @@
                                  location=CONF.image.http_image,
                                  properties={'key1': 'value1',
                                              'key2': 'value2'})
-        self.assertIn('id', body)
         self.assertEqual('New Remote Image', body.get('name'))
         self.assertFalse(body.get('is_public'))
         self.assertEqual('active', body.get('status'))
@@ -92,7 +90,6 @@
                                   container_format=container_format,
                                   disk_format=disk_format, is_public=False,
                                   copy_from=CONF.image.http_image)
-        self.assertIn('id', image)
         self.assertEqual('New Http Image', image.get('name'))
         self.assertFalse(image.get('is_public'))
         waiters.wait_for_image_status(self.client, image['id'], 'active')
@@ -109,7 +106,6 @@
                                  is_public=False,
                                  min_ram=40,
                                  properties=properties)
-        self.assertIn('id', body)
         self.assertEqual('New_image_with_min_ram', body.get('name'))
         self.assertFalse(body.get('is_public'))
         self.assertEqual('queued', body.get('status'))
diff --git a/tempest/api/image/v2/test_images.py b/tempest/api/image/v2/test_images.py
index 7b9244b..453bb34 100644
--- a/tempest/api/image/v2/test_images.py
+++ b/tempest/api/image/v2/test_images.py
@@ -49,7 +49,6 @@
                                   disk_format=disk_format,
                                   visibility='private',
                                   ramdisk_id=uuid)
-        self.assertIn('id', image)
         self.assertIn('name', image)
         self.assertEqual(image_name, image['name'])
         self.assertIn('visibility', image)
diff --git a/tempest/api/network/admin/test_negative_quotas.py b/tempest/api/network/admin/test_negative_quotas.py
index c256b5b..beb6ce6 100644
--- a/tempest/api/network/admin/test_negative_quotas.py
+++ b/tempest/api/network/admin/test_negative_quotas.py
@@ -57,8 +57,7 @@
         # Try to create a third network while the quota is two
         with self.assertRaisesRegex(
                 lib_exc.Conflict,
-                "An object with that identifier already exists\\n" +
-                "Details.*Quota exceeded for resources: \['network'\].*"):
+                "Quota exceeded for resources: \['network'\].*"):
             n3 = self.networks_client.create_network()
             self.addCleanup(self.networks_client.delete_network,
                             n3['network']['id'])
diff --git a/tempest/api/network/admin/test_quotas.py b/tempest/api/network/admin/test_quotas.py
index 978fb8f..8695ebd 100644
--- a/tempest/api/network/admin/test_quotas.py
+++ b/tempest/api/network/admin/test_quotas.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
-
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
@@ -57,7 +55,7 @@
             project_id, **new_quotas)['quota']
         self.addCleanup(test_utils.call_and_ignore_notfound_exc,
                         self.admin_quotas_client.reset_quotas, project_id)
-        for key, value in six.iteritems(new_quotas):
+        for key, value in new_quotas.items():
             self.assertEqual(value, quota_set[key])
 
         # Confirm our project is listed among projects with non default quotas
@@ -71,7 +69,7 @@
         # Confirm from API quotas were changed as requested for project
         quota_set = self.admin_quotas_client.show_quotas(project_id)
         quota_set = quota_set['quota']
-        for key, value in six.iteritems(new_quotas):
+        for key, value in new_quotas.items():
             self.assertEqual(value, quota_set[key])
 
         # Reset quotas to default and confirm
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index 84c48ec..3c96a93 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -16,8 +16,6 @@
 import netaddr
 import random
 
-import six
-
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest.common.utils import net_info
@@ -126,7 +124,7 @@
         ):
             kwargs = {'ipv6_ra_mode': ra_mode,
                       'ipv6_address_mode': add_mode}
-            kwargs = dict((k, v) for k, v in six.iteritems(kwargs) if v)
+            kwargs = dict((k, v) for k, v in kwargs.items() if v)
             real_ip, eui_ip = self._get_ips_from_subnet(**kwargs)
             self._clean_network()
             self.assertEqual(eui_ip, real_ip,
@@ -269,7 +267,7 @@
         ):
             kwargs = {'ipv6_ra_mode': ra_mode,
                       'ipv6_address_mode': add_mode}
-            kwargs = dict((k, v) for k, v in six.iteritems(kwargs) if v)
+            kwargs = dict((k, v) for k, v in kwargs.items() if v)
             subnet = self.create_subnet(self.network, **kwargs)
             port = self.create_port(self.network)
             port_ip = next(iter(port['fixed_ips']), None)['ip_address']
@@ -291,7 +289,7 @@
         ):
             kwargs = {'ipv6_ra_mode': ra_mode,
                       'ipv6_address_mode': add_mode}
-            kwargs = dict((k, v) for k, v in six.iteritems(kwargs) if v)
+            kwargs = dict((k, v) for k, v in kwargs.items() if v)
             subnet = self.create_subnet(self.network, **kwargs)
             ip_range = netaddr.IPRange(subnet["allocation_pools"][0]["start"],
                                        subnet["allocation_pools"][0]["end"])
@@ -340,7 +338,7 @@
                              {'subnet_id': subnet['id'],
                               'ip_address': ip}])
         self.assertRaisesRegex(lib_exc.Conflict,
-                               "object with that identifier already exists",
+                               "IpAddressAlreadyAllocated|IpAddressInUse",
                                self.create_port,
                                self.network,
                                fixed_ips=[{'subnet_id': subnet['id'],
@@ -364,7 +362,7 @@
         ):
             kwargs = {'ipv6_ra_mode': ra_mode,
                       'ipv6_address_mode': add_mode}
-            kwargs = dict((k, v) for k, v in six.iteritems(kwargs) if v)
+            kwargs = dict((k, v) for k, v in kwargs.items() if v)
             subnet, port = self._create_subnet_router(kwargs)
             port_ip = next(iter(port['fixed_ips']), None)['ip_address']
             self._clean_network()
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index acac22b..8e2f3f6 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -130,7 +130,7 @@
                                     **kwargs)
         compare_args_full = dict(gateway_ip=gateway, cidr=cidr,
                                  mask_bits=mask_bits, **kwargs)
-        compare_args = dict((k, v) for k, v in six.iteritems(compare_args_full)
+        compare_args = dict((k, v) for k, v in compare_args_full.items()
                             if v is not None)
 
         if 'dns_nameservers' in set(subnet).intersection(compare_args):
diff --git a/tempest/api/network/test_ports.py b/tempest/api/network/test_ports.py
index 5b46088..e7153f0 100644
--- a/tempest/api/network/test_ports.py
+++ b/tempest/api/network/test_ports.py
@@ -108,7 +108,7 @@
         if ((address.version == 4 and address.prefixlen >= 30) or
            (address.version == 6 and address.prefixlen >= 126)):
             msg = ("Subnet %s isn't large enough for the test" % address.cidr)
-            raise exceptions.InvalidConfiguration(message=msg)
+            raise exceptions.InvalidConfiguration(msg)
         allocation_pools = {'allocation_pools': [{'start': str(address[2]),
                                                   'end': str(address[-2])}]}
         subnet = self.create_subnet(network, cidr=address,
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index f2170ad..101e4dd 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 import netaddr
-import six
 
 from tempest.api.network import base_routers as base
 from tempest.common.utils import data_utils
@@ -163,7 +162,7 @@
             self.assertIsNone(actual_ext_gw_info)
             return
         # Verify only keys passed in exp_ext_gw_info
-        for k, v in six.iteritems(exp_ext_gw_info):
+        for k, v in exp_ext_gw_info.items():
             self.assertEqual(v, actual_ext_gw_info[k])
 
     def _verify_gateway_port(self, router_id):
diff --git a/tempest/api/network/test_security_groups.py b/tempest/api/network/test_security_groups.py
index 1031ab8..be01852 100644
--- a/tempest/api/network/test_security_groups.py
+++ b/tempest/api/network/test_security_groups.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
-
 from tempest.api.network import base_security_groups as base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -62,7 +60,7 @@
                     'port_range_max': port_range_max,
                     'remote_group_id': remote_group_id,
                     'remote_ip_prefix': remote_ip_prefix}
-        for key, value in six.iteritems(expected):
+        for key, value in expected.items():
             self.assertEqual(value, sec_group_rule[key],
                              "Field %s of the created security group "
                              "rule does not match with %s." %
@@ -131,7 +129,7 @@
                 rule_create_body['security_group_rule']['id']
             )
             create_dict = rule_create_body['security_group_rule']
-            for key, value in six.iteritems(create_dict):
+            for key, value in create_dict.items():
                 self.assertEqual(value,
                                  show_rule_body['security_group_rule'][key],
                                  "%s does not match." % key)
diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index eb313d2..535137e 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -25,6 +25,38 @@
 CONF = config.CONF
 
 
+def delete_containers(containers, container_client, object_client):
+    """Remove containers and all objects in them.
+
+    The containers should be visible from the container_client given.
+    Will not throw any error if the containers don't exist.
+    Will not check that object and container deletions succeed.
+    After delete all the objects from a container, it will wait 2
+    seconds before delete the container itself, in order to deployments
+    using HA proxy sync the deletion properly, otherwise, the container
+    might fail to be deleted because it's not empty.
+
+    :param containers: List of containers to be deleted
+    :param container_client: Client to be used to delete containers
+    :param object_client: Client to be used to delete objects
+    """
+    for cont in containers:
+        try:
+            params = {'limit': 9999, 'format': 'json'}
+            resp, objlist = container_client.list_container_contents(
+                cont, params)
+            # delete every object in the container
+            for obj in objlist:
+                test_utils.call_and_ignore_notfound_exc(
+                    object_client.delete_object, cont, obj['name'])
+            # sleep 2 seconds to sync the deletion of the objects
+            # in HA deployment
+            time.sleep(2)
+            container_client.delete_container(cont)
+        except lib_exc.NotFound:
+            pass
+
+
 class BaseObjectTest(tempest.test.BaseTestCase):
 
     credentials = [['operator', CONF.object_storage.operator_role]]
@@ -98,42 +130,12 @@
         return object_name, data
 
     @classmethod
-    def delete_containers(cls, container_client=None,
-                          object_client=None):
-        """Remove containers and all objects in them.
-
-        The containers should be visible from the container_client given.
-        Will not throw any error if the containers don't exist.
-        Will not check that object and container deletions succeed.
-        After delete all the objects from a container, it will wait 2
-        seconds before delete the container itself, in order to deployments
-        using HA proxy sync the deletion properly, otherwise, the container
-        might fail to be deleted because it's not empty.
-
-        :param container_client: if None, use cls.container_client, this means
-            that the default testing user will be used (see 'username' in
-            'etc/tempest.conf')
-        :param object_client: if None, use cls.object_client
-        """
+    def delete_containers(cls, container_client=None, object_client=None):
         if container_client is None:
             container_client = cls.container_client
         if object_client is None:
             object_client = cls.object_client
-        for cont in cls.containers:
-            try:
-                params = {'limit': 9999, 'format': 'json'}
-                resp, objlist = container_client.list_container_contents(
-                    cont, params)
-                # delete every object in the container
-                for obj in objlist:
-                    test_utils.call_and_ignore_notfound_exc(
-                        object_client.delete_object, cont, obj['name'])
-                # sleep 2 seconds to sync the deletion of the objects
-                # in HA deployment
-                time.sleep(2)
-                container_client.delete_container(cont)
-            except lib_exc.NotFound:
-                pass
+        delete_containers(cls.containers, container_client, object_client)
 
     def assertHeaders(self, resp, target, method):
         """Check the existence and the format of response headers"""
diff --git a/tempest/api/object_storage/test_account_bulk.py b/tempest/api/object_storage/test_account_bulk.py
index a75ed98..1eda49a 100644
--- a/tempest/api/object_storage/test_account_bulk.py
+++ b/tempest/api/object_storage/test_account_bulk.py
@@ -27,7 +27,10 @@
         self.containers = []
 
     def tearDown(self):
-        self.delete_containers()
+        # NOTE(andreaf) BulkTests needs to cleanup containers after each
+        # test is executed.
+        base.delete_containers(self.containers, self.container_client,
+                               self.object_client)
         super(BulkTest, self).tearDown()
 
     def _create_archive(self):
diff --git a/tempest/api/object_storage/test_container_services_negative.py b/tempest/api/object_storage/test_container_services_negative.py
index f63c518..2856fab 100644
--- a/tempest/api/object_storage/test_container_services_negative.py
+++ b/tempest/api/object_storage/test_container_services_negative.py
@@ -173,5 +173,5 @@
         ex = self.assertRaises(exceptions.Conflict,
                                self.container_client.delete_container,
                                container_name)
-        self.assertIn('An object with that identifier already exists',
-                      str(ex))
+        self.assertIn('There was a conflict when trying to complete your '
+                      'request.', str(ex))
diff --git a/tempest/api/object_storage/test_object_services.py b/tempest/api/object_storage/test_object_services.py
index 8736f9a..e2e9919 100644
--- a/tempest/api/object_storage/test_object_services.py
+++ b/tempest/api/object_storage/test_object_services.py
@@ -19,8 +19,6 @@
 import time
 import zlib
 
-import six
-
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
@@ -865,7 +863,7 @@
         expected = {'x-object-meta-test': '',
                     'x-object-meta-src': 'src_value',
                     'x-copied-from': self.container_name + "/" + src_obj_name}
-        for key, value in six.iteritems(expected):
+        for key, value in expected.items():
             self.assertIn(key, resp)
             self.assertEqual(value, resp[key])
 
@@ -888,7 +886,7 @@
         expected = {'x-object-meta-test': 'value',
                     'x-object-meta-src': 'src_value',
                     'x-copied-from': self.container_name + "/" + src_obj_name}
-        for key, value in six.iteritems(expected):
+        for key, value in expected.items():
             self.assertIn(key, resp)
             self.assertEqual(value, resp[key])
 
diff --git a/tempest/api/orchestration/stacks/test_neutron_resources.py b/tempest/api/orchestration/stacks/test_neutron_resources.py
index 6d27502..5d680d2 100644
--- a/tempest/api/orchestration/stacks/test_neutron_resources.py
+++ b/tempest/api/orchestration/stacks/test_neutron_resources.py
@@ -28,8 +28,6 @@
 
     @classmethod
     def skip_checks(cls):
-        msg = "Skipped until Bug: 1547261 is resolved."
-        raise cls.skipException(msg)
         super(NeutronResourcesTestJSON, cls).skip_checks()
         if not CONF.service_available.neutron:
             raise cls.skipException("Neutron support is required")
@@ -44,6 +42,7 @@
         super(NeutronResourcesTestJSON, cls).setup_clients()
         cls.subnets_client = cls.os.subnets_client
         cls.ports_client = cls.os.ports_client
+        cls.routers_client = cls.os.routers_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/volume/admin/test_volume_quotas.py b/tempest/api/volume/admin/test_volume_quotas.py
index b47a5f0..7d8c94d 100644
--- a/tempest/api/volume/admin/test_volume_quotas.py
+++ b/tempest/api/volume/admin/test_volume_quotas.py
@@ -12,7 +12,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest.common import waiters
@@ -63,7 +62,7 @@
             **new_quota_set)['quota_set']
 
         cleanup_quota_set = dict(
-            (k, v) for k, v in six.iteritems(default_quota_set)
+            (k, v) for k, v in default_quota_set.items()
             if k in QUOTA_KEYS)
         self.addCleanup(self.admin_quotas_client.update_quota_set,
                         self.demo_tenant_id, **cleanup_quota_set)
diff --git a/tempest/api/volume/admin/test_volume_types.py b/tempest/api/volume/admin/test_volume_types.py
index 3098cab..6b2acc6 100644
--- a/tempest/api/volume/admin/test_volume_types.py
+++ b/tempest/api/volume/admin/test_volume_types.py
@@ -93,7 +93,6 @@
                        "vendor_name": vendor}
         body = self.create_volume_type(description=description, name=name,
                                        extra_specs=extra_specs)
-        self.assertIn('id', body)
         self.assertIn('name', body)
         self.assertEqual(name, body['name'],
                          "The created volume_type name is not equal "
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 9f522bd..90dc7f4 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -51,7 +51,7 @@
                 raise cls.skipException(msg)
         else:
             msg = ("Invalid Cinder API version (%s)" % cls._api_version)
-            raise exceptions.InvalidConfiguration(message=msg)
+            raise exceptions.InvalidConfiguration(msg)
 
     @classmethod
     def setup_credentials(cls):
@@ -200,16 +200,13 @@
     @classmethod
     def clear_snapshots(cls):
         for snapshot in cls.snapshots:
-            try:
-                cls.snapshots_client.delete_snapshot(snapshot['id'])
-            except Exception:
-                pass
+            test_utils.call_and_ignore_notfound_exc(
+                cls.snapshots_client.delete_snapshot, snapshot['id'])
 
         for snapshot in cls.snapshots:
-            try:
-                cls.snapshots_client.wait_for_resource_deletion(snapshot['id'])
-            except Exception:
-                pass
+            test_utils.call_and_ignore_notfound_exc(
+                cls.snapshots_client.wait_for_resource_deletion,
+                snapshot['id'])
 
     def create_server(self, **kwargs):
         name = kwargs.pop(
diff --git a/tempest/api/volume/test_extensions.py b/tempest/api/volume/test_extensions.py
index cce9ace..f044124 100644
--- a/tempest/api/volume/test_extensions.py
+++ b/tempest/api/volume/test_extensions.py
@@ -35,7 +35,7 @@
         if len(CONF.volume_feature_enabled.api_extensions) == 0:
             raise self.skipException('There are not any extensions configured')
         extension_list = [extension.get('alias') for extension in extensions]
-        LOG.debug("Cinder extensions: %s" % ','.join(extension_list))
+        LOG.debug("Cinder extensions: %s", ','.join(extension_list))
         ext = CONF.volume_feature_enabled.api_extensions[0]
         if ext == 'all':
             self.assertIn('Hosts', map(lambda x: x['name'], extensions))
diff --git a/tempest/api/volume/test_volume_absolute_limits.py b/tempest/api/volume/test_volume_absolute_limits.py
index bc7694a..35e0d56 100644
--- a/tempest/api/volume/test_volume_absolute_limits.py
+++ b/tempest/api/volume/test_volume_absolute_limits.py
@@ -23,6 +23,9 @@
 
 class AbsoluteLimitsV2Tests(base.BaseVolumeTest):
 
+    # avoid existing volumes of pre-defined tenant
+    force_tenant_isolation = True
+
     @classmethod
     def resource_setup(cls):
         super(AbsoluteLimitsV2Tests, cls).resource_setup()
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index 3c7a2c8..6f85891 100644
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -140,6 +140,14 @@
         # Destination volume bigger than source snapshot
         dst_vol = self.create_volume(snapshot_id=src_snap['id'],
                                      size=src_size + 1)
+        # NOTE(zhufl): dst_vol is created based on snapshot, so dst_vol
+        # should be deleted before deleting snapshot, otherwise deleting
+        # snapshot will end with status 'error-deleting'. This depends on
+        # the implementation mechanism of vendors, generally speaking,
+        # some verdors will use "virtual disk clone" which will promote
+        # disk clone speed, and in this situation the "disk clone"
+        # is just a relationship between volume and snapshot.
+        self.addCleanup(self.delete_volume, self.volumes_client, dst_vol['id'])
 
         volume = self.volumes_client.show_volume(dst_vol['id'])['volume']
         # Should allow
diff --git a/tempest/clients.py b/tempest/clients.py
index 9a378bb..f99060a 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -13,15 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import copy
-
 from oslo_log import log as logging
 
 from tempest import config
 from tempest.lib import auth
 from tempest.lib import exceptions as lib_exc
 from tempest.lib.services import clients
-from tempest.services import identity
+from tempest.lib.services import identity
 from tempest.services import object_storage
 from tempest.services import orchestration
 
@@ -42,12 +40,11 @@
     }
     default_params_with_timeout_values.update(default_params)
 
-    def __init__(self, credentials, service=None, scope='project'):
+    def __init__(self, credentials, scope='project'):
         """Initialization of Manager class.
 
         Setup all services clients and make them available for tests cases.
         :param credentials: type Credentials or TestResources
-        :param service: Service name
         :param scope: default scope for tokens produced by the auth provider
         """
         _, identity_uri = get_auth_provider_class(credentials)
@@ -99,7 +96,7 @@
                         config.service_client_config(service_for_config))
             except lib_exc.UnknownServiceClient:
                 LOG.warning(
-                    'Could not load configuration for service %s' % service)
+                    'Could not load configuration for service %s', service)
 
         return configuration
 
@@ -188,67 +185,52 @@
             **params_volume)
 
     def _set_identity_clients(self):
-        params = self.parameters['identity']
-
         # Clients below use the admin endpoint type of Keystone API v2
-        params_v2_admin = copy.copy(params)
-        params_v2_admin['endpoint_type'] = CONF.identity.v2_admin_endpoint_type
-        self.endpoints_client = identity.v2.EndpointsClient(self.auth_provider,
-                                                            **params_v2_admin)
-        self.identity_client = identity.v2.IdentityClient(self.auth_provider,
-                                                          **params_v2_admin)
-        self.tenants_client = identity.v2.TenantsClient(self.auth_provider,
-                                                        **params_v2_admin)
-        self.roles_client = identity.v2.RolesClient(self.auth_provider,
-                                                    **params_v2_admin)
-        self.users_client = identity.v2.UsersClient(self.auth_provider,
-                                                    **params_v2_admin)
-        self.identity_services_client = identity.v2.ServicesClient(
-            self.auth_provider, **params_v2_admin)
+        params_v2_admin = {
+            'endpoint_type': CONF.identity.v2_admin_endpoint_type}
+        self.endpoints_client = self.identity_v2.EndpointsClient(
+            **params_v2_admin)
+        self.identity_client = self.identity_v2.IdentityClient(
+            **params_v2_admin)
+        self.tenants_client = self.identity_v2.TenantsClient(
+            **params_v2_admin)
+        self.roles_client = self.identity_v2.RolesClient(**params_v2_admin)
+        self.users_client = self.identity_v2.UsersClient(**params_v2_admin)
+        self.identity_services_client = self.identity_v2.ServicesClient(
+            **params_v2_admin)
 
         # Clients below use the public endpoint type of Keystone API v2
-        params_v2_public = copy.copy(params)
-        params_v2_public['endpoint_type'] = (
-            CONF.identity.v2_public_endpoint_type)
-        self.identity_public_client = identity.v2.IdentityClient(
-            self.auth_provider, **params_v2_public)
-        self.tenants_public_client = identity.v2.TenantsClient(
-            self.auth_provider, **params_v2_public)
-        self.users_public_client = identity.v2.UsersClient(
-            self.auth_provider, **params_v2_public)
+        params_v2_public = {
+            'endpoint_type': CONF.identity.v2_public_endpoint_type}
+        self.identity_public_client = self.identity_v2.IdentityClient(
+            **params_v2_public)
+        self.tenants_public_client = self.identity_v2.TenantsClient(
+            **params_v2_public)
+        self.users_public_client = self.identity_v2.UsersClient(
+            **params_v2_public)
 
         # Clients below use the endpoint type of Keystone API v3, which is set
         # in endpoint_type
-        params_v3 = copy.copy(params)
-        params_v3['endpoint_type'] = CONF.identity.v3_endpoint_type
-        self.domains_client = identity.v3.DomainsClient(self.auth_provider,
-                                                        **params_v3)
-        self.identity_v3_client = identity.v3.IdentityClient(
-            self.auth_provider, **params_v3)
-        self.trusts_client = identity.v3.TrustsClient(self.auth_provider,
-                                                      **params_v3)
-        self.users_v3_client = identity.v3.UsersClient(self.auth_provider,
-                                                       **params_v3)
-        self.endpoints_v3_client = identity.v3.EndPointsClient(
-            self.auth_provider, **params_v3)
-        self.roles_v3_client = identity.v3.RolesClient(self.auth_provider,
-                                                       **params_v3)
-        self.inherited_roles_client = identity.v3.InheritedRolesClient(
-            self.auth_provider, **params_v3)
-        self.role_assignments_client = identity.v3.RoleAssignmentsClient(
-            self.auth_provider, **params_v3)
-        self.identity_services_v3_client = identity.v3.ServicesClient(
-            self.auth_provider, **params_v3)
-        self.policies_client = identity.v3.PoliciesClient(self.auth_provider,
-                                                          **params_v3)
-        self.projects_client = identity.v3.ProjectsClient(self.auth_provider,
-                                                          **params_v3)
-        self.regions_client = identity.v3.RegionsClient(self.auth_provider,
-                                                        **params_v3)
-        self.credentials_client = identity.v3.CredentialsClient(
-            self.auth_provider, **params_v3)
-        self.groups_client = identity.v3.GroupsClient(self.auth_provider,
-                                                      **params_v3)
+        params_v3 = {'endpoint_type': CONF.identity.v3_endpoint_type}
+        self.domains_client = self.identity_v3.DomainsClient(**params_v3)
+        self.identity_v3_client = self.identity_v3.IdentityClient(**params_v3)
+        self.trusts_client = self.identity_v3.TrustsClient(**params_v3)
+        self.users_v3_client = self.identity_v3.UsersClient(**params_v3)
+        self.endpoints_v3_client = self.identity_v3.EndPointsClient(
+            **params_v3)
+        self.roles_v3_client = self.identity_v3.RolesClient(**params_v3)
+        self.inherited_roles_client = self.identity_v3.InheritedRolesClient(
+            **params_v3)
+        self.role_assignments_client = self.identity_v3.RoleAssignmentsClient(
+            **params_v3)
+        self.identity_services_v3_client = self.identity_v3.ServicesClient(
+            **params_v3)
+        self.policies_client = self.identity_v3.PoliciesClient(**params_v3)
+        self.projects_client = self.identity_v3.ProjectsClient(**params_v3)
+        self.regions_client = self.identity_v3.RegionsClient(**params_v3)
+        self.credentials_client = self.identity_v3.CredentialsClient(
+            **params_v3)
+        self.groups_client = self.identity_v3.GroupsClient(**params_v3)
 
         # Token clients do not use the catalog. They only need default_params.
         # They read auth_url, so they should only be set if the corresponding
diff --git a/tempest/cmd/account_generator.py b/tempest/cmd/account_generator.py
index 3d38e25..172d9e1 100755
--- a/tempest/cmd/account_generator.py
+++ b/tempest/cmd/account_generator.py
@@ -205,7 +205,7 @@
         os.rename(account_file, '.'.join((account_file, 'bak')))
     with open(account_file, 'w') as f:
         yaml.safe_dump(accounts, f, default_flow_style=False)
-    LOG.info('%s generated successfully!' % account_file)
+    LOG.info('%s generated successfully!', account_file)
 
 
 def _parser_add_args(parser):
diff --git a/tempest/cmd/cleanup.py b/tempest/cmd/cleanup.py
index af86fe3..ec76103 100644
--- a/tempest/cmd/cleanup.py
+++ b/tempest/cmd/cleanup.py
@@ -149,8 +149,8 @@
 
     def _remove_admin_user_roles(self):
         tenant_ids = self.admin_role_added
-        LOG.debug("Removing admin user roles where needed for tenants: %s"
-                  % tenant_ids)
+        LOG.debug("Removing admin user roles where needed for tenants: %s",
+                  tenant_ids)
         for tenant_id in tenant_ids:
             self._remove_admin_role(tenant_id)
 
@@ -236,13 +236,13 @@
                 needs_role = False
                 LOG.debug("User already had admin privilege for this tenant")
         if needs_role:
-            LOG.debug("Adding admin privilege for : %s" % tenant_id)
+            LOG.debug("Adding admin privilege for : %s", tenant_id)
             rl_cl.create_user_role_on_project(tenant_id, self.admin_id,
                                               self.admin_role_id)
             self.admin_role_added.append(tenant_id)
 
     def _remove_admin_role(self, tenant_id):
-        LOG.debug("Remove admin user role for tenant: %s" % tenant_id)
+        LOG.debug("Remove admin user role for tenant: %s", tenant_id)
         # Must initialize AdminManager for each user role
         # Otherwise authentication exception is thrown, weird
         id_cl = credentials.AdminManager().identity_client
@@ -253,16 +253,16 @@
                                                        self.admin_role_id)
             except Exception as ex:
                 LOG.exception("Failed removing role from tenant which still"
-                              "exists, exception: %s" % ex)
+                              "exists, exception: %s", ex)
 
     def _tenant_exists(self, tenant_id):
         tn_cl = self.admin_mgr.tenants_client
         try:
             t = tn_cl.show_tenant(tenant_id)
-            LOG.debug("Tenant is: %s" % str(t))
+            LOG.debug("Tenant is: %s", str(t))
             return True
         except Exception as ex:
-            LOG.debug("Tenant no longer exists? %s" % ex)
+            LOG.debug("Tenant no longer exists? %s", ex)
             return False
 
     def _init_state(self):
@@ -290,8 +290,8 @@
         except IOError as ex:
             LOG.exception("Failed loading saved state, please be sure you"
                           " have first run cleanup with --init-saved-state "
-                          "flag prior to running tempest. Exception: %s" % ex)
+                          "flag prior to running tempest. Exception: %s", ex)
             sys.exit(ex)
         except Exception as ex:
-            LOG.exception("Exception parsing saved state json : %s" % ex)
+            LOG.exception("Exception parsing saved state json : %s", ex)
             sys.exit(ex)
diff --git a/tempest/cmd/cleanup_service.py b/tempest/cmd/cleanup_service.py
index 32b0ebb..a632726 100644
--- a/tempest/cmd/cleanup_service.py
+++ b/tempest/cmd/cleanup_service.py
@@ -144,7 +144,7 @@
     def list(self):
         client = self.client
         snaps = client.list_snapshots()['snapshots']
-        LOG.debug("List count, %s Snapshots" % len(snaps))
+        LOG.debug("List count, %s Snapshots", len(snaps))
         return snaps
 
     def delete(self):
@@ -171,7 +171,7 @@
         client = self.client
         servers_body = client.list_servers()
         servers = servers_body['servers']
-        LOG.debug("List count, %s Servers" % len(servers))
+        LOG.debug("List count, %s Servers", len(servers))
         return servers
 
     def delete(self):
@@ -193,7 +193,7 @@
     def list(self):
         client = self.server_groups_client
         sgs = client.list_server_groups()['server_groups']
-        LOG.debug("List count, %s Server Groups" % len(sgs))
+        LOG.debug("List count, %s Server Groups", len(sgs))
         return sgs
 
     def delete(self):
@@ -218,7 +218,7 @@
     def list(self):
         client = self.client
         stacks = client.list_stacks()['stacks']
-        LOG.debug("List count, %s Stacks" % len(stacks))
+        LOG.debug("List count, %s Stacks", len(stacks))
         return stacks
 
     def delete(self):
@@ -243,7 +243,7 @@
     def list(self):
         client = self.client
         keypairs = client.list_keypairs()['keypairs']
-        LOG.debug("List count, %s Keypairs" % len(keypairs))
+        LOG.debug("List count, %s Keypairs", len(keypairs))
         return keypairs
 
     def delete(self):
@@ -270,7 +270,7 @@
         client = self.client
         secgrps = client.list_security_groups()['security_groups']
         secgrp_del = [grp for grp in secgrps if grp['name'] != 'default']
-        LOG.debug("List count, %s Security Groups" % len(secgrp_del))
+        LOG.debug("List count, %s Security Groups", len(secgrp_del))
         return secgrp_del
 
     def delete(self):
@@ -295,7 +295,7 @@
     def list(self):
         client = self.client
         floating_ips = client.list_floating_ips()['floating_ips']
-        LOG.debug("List count, %s Floating IPs" % len(floating_ips))
+        LOG.debug("List count, %s Floating IPs", len(floating_ips))
         return floating_ips
 
     def delete(self):
@@ -320,7 +320,7 @@
     def list(self):
         client = self.client
         vols = client.list_volumes()['volumes']
-        LOG.debug("List count, %s Volumes" % len(vols))
+        LOG.debug("List count, %s Volumes", len(vols))
         return vols
 
     def delete(self):
@@ -402,7 +402,7 @@
         if self.is_preserve:
             networks = [network for network in networks
                         if network['id'] not in CONF_NETWORKS]
-        LOG.debug("List count, %s Networks" % networks)
+        LOG.debug("List count, %s Networks", networks)
         return networks
 
     def delete(self):
@@ -425,7 +425,7 @@
         client = self.floating_ips_client
         flips = client.list_floatingips(**self.tenant_filter)
         flips = flips['floatingips']
-        LOG.debug("List count, %s Network Floating IPs" % len(flips))
+        LOG.debug("List count, %s Network Floating IPs", len(flips))
         return flips
 
     def delete(self):
@@ -452,7 +452,7 @@
             routers = [router for router in routers
                        if router['id'] != CONF_PUB_ROUTER]
 
-        LOG.debug("List count, %s Routers" % len(routers))
+        LOG.debug("List count, %s Routers", len(routers))
         return routers
 
     def delete(self):
@@ -483,7 +483,7 @@
         hms = client.list_health_monitors()
         hms = hms['health_monitors']
         hms = self._filter_by_tenant_id(hms)
-        LOG.debug("List count, %s Health Monitors" % len(hms))
+        LOG.debug("List count, %s Health Monitors", len(hms))
         return hms
 
     def delete(self):
@@ -507,7 +507,7 @@
         members = client.list_members()
         members = members['members']
         members = self._filter_by_tenant_id(members)
-        LOG.debug("List count, %s Members" % len(members))
+        LOG.debug("List count, %s Members", len(members))
         return members
 
     def delete(self):
@@ -531,7 +531,7 @@
         vips = client.list_vips()
         vips = vips['vips']
         vips = self._filter_by_tenant_id(vips)
-        LOG.debug("List count, %s VIPs" % len(vips))
+        LOG.debug("List count, %s VIPs", len(vips))
         return vips
 
     def delete(self):
@@ -555,7 +555,7 @@
         pools = client.list_pools()
         pools = pools['pools']
         pools = self._filter_by_tenant_id(pools)
-        LOG.debug("List count, %s Pools" % len(pools))
+        LOG.debug("List count, %s Pools", len(pools))
         return pools
 
     def delete(self):
@@ -579,7 +579,7 @@
         rules = client.list_metering_label_rules()
         rules = rules['metering_label_rules']
         rules = self._filter_by_tenant_id(rules)
-        LOG.debug("List count, %s Metering Label Rules" % len(rules))
+        LOG.debug("List count, %s Metering Label Rules", len(rules))
         return rules
 
     def delete(self):
@@ -603,7 +603,7 @@
         labels = client.list_metering_labels()
         labels = labels['metering_labels']
         labels = self._filter_by_tenant_id(labels)
-        LOG.debug("List count, %s Metering Labels" % len(labels))
+        LOG.debug("List count, %s Metering Labels", len(labels))
         return labels
 
     def delete(self):
@@ -632,7 +632,7 @@
         if self.is_preserve:
             ports = self._filter_by_conf_networks(ports)
 
-        LOG.debug("List count, %s Ports" % len(ports))
+        LOG.debug("List count, %s Ports", len(ports))
         return ports
 
     def delete(self):
@@ -660,7 +660,7 @@
 
         if self.is_preserve:
             secgroups = self._filter_by_conf_networks(secgroups)
-        LOG.debug("List count, %s security_groups" % len(secgroups))
+        LOG.debug("List count, %s security_groups", len(secgroups))
         return secgroups
 
     def delete(self):
@@ -685,7 +685,7 @@
         subnets = subnets['subnets']
         if self.is_preserve:
             subnets = self._filter_by_conf_networks(subnets)
-        LOG.debug("List count, %s Subnets" % len(subnets))
+        LOG.debug("List count, %s Subnets", len(subnets))
         return subnets
 
     def delete(self):
@@ -719,7 +719,7 @@
         if self.is_preserve:
             flavors = [flavor for flavor in flavors
                        if flavor['id'] not in CONF_FLAVORS]
-        LOG.debug("List count, %s Flavors after reconcile" % len(flavors))
+        LOG.debug("List count, %s Flavors after reconcile", len(flavors))
         return flavors
 
     def delete(self):
@@ -756,7 +756,7 @@
         if self.is_preserve:
             images = [image for image in images
                       if image['id'] not in CONF_IMAGES]
-        LOG.debug("List count, %s Images after reconcile" % len(images))
+        LOG.debug("List count, %s Images after reconcile", len(images))
         return images
 
     def delete(self):
@@ -806,7 +806,7 @@
             users = [user for user in users if user['name'] !=
                      CONF.auth.admin_username]
 
-        LOG.debug("List count, %s Users after reconcile" % len(users))
+        LOG.debug("List count, %s Users after reconcile", len(users))
         return users
 
     def delete(self):
@@ -843,7 +843,7 @@
                          (role['id'] not in
                           self.saved_state_json['roles'].keys()
                           and role['name'] != CONF.identity.admin_role)]
-                LOG.debug("List count, %s Roles after reconcile" % len(roles))
+                LOG.debug("List count, %s Roles after reconcile", len(roles))
             return roles
         except Exception:
             LOG.exception("Cannot retrieve Roles.")
@@ -885,7 +885,7 @@
             tenants = [tenant for tenant in tenants if tenant['name']
                        not in CONF_TENANTS]
 
-        LOG.debug("List count, %s Tenants after reconcile" % len(tenants))
+        LOG.debug("List count, %s Tenants after reconcile", len(tenants))
         return tenants
 
     def delete(self):
@@ -920,7 +920,7 @@
             domains = [domain for domain in domains if domain['id']
                        not in self.saved_state_json['domains'].keys()]
 
-        LOG.debug("List count, %s Domains after reconcile" % len(domains))
+        LOG.debug("List count, %s Domains after reconcile", len(domains))
         return domains
 
     def delete(self):
diff --git a/tempest/cmd/init.py b/tempest/cmd/init.py
index 99185d2..7634d9e 100644
--- a/tempest/cmd/init.py
+++ b/tempest/cmd/init.py
@@ -120,7 +120,7 @@
         if os.path.isdir(config_dir):
             shutil.copytree(config_dir, etc_dir)
         else:
-            LOG.warning("Global config dir %s can't be found" % config_dir)
+            LOG.warning("Global config dir %s can't be found", config_dir)
 
     def generate_sample_config(self, local_dir):
         conf_generator = os.path.join(os.path.dirname(__file__),
@@ -131,14 +131,14 @@
                             output_file])
         else:
             LOG.warning("Skipping sample config generation because global "
-                        "config file %s can't be found" % conf_generator)
+                        "config file %s can't be found", conf_generator)
 
     def create_working_dir(self, local_dir, config_dir):
         # make sure we are working with abspath however tempest init is called
         local_dir = os.path.abspath(local_dir)
         # Create local dir if missing
         if not os.path.isdir(local_dir):
-            LOG.debug('Creating local working dir: %s' % local_dir)
+            LOG.debug('Creating local working dir: %s', local_dir)
             os.mkdir(local_dir)
         elif not os.listdir(local_dir) == []:
             raise OSError("Directory you are trying to initialize already "
@@ -151,11 +151,11 @@
         testr_dir = os.path.join(local_dir, '.testrepository')
         # Create lock dir
         if not os.path.isdir(lock_dir):
-            LOG.debug('Creating lock dir: %s' % lock_dir)
+            LOG.debug('Creating lock dir: %s', lock_dir)
             os.mkdir(lock_dir)
         # Create log dir
         if not os.path.isdir(log_dir):
-            LOG.debug('Creating log dir: %s' % log_dir)
+            LOG.debug('Creating log dir: %s', log_dir)
             os.mkdir(log_dir)
         # Create and copy local etc dir
         self.copy_config(etc_dir, config_dir)
diff --git a/tempest/common/compute.py b/tempest/common/compute.py
index 64543fb..4f2fe67 100644
--- a/tempest/common/compute.py
+++ b/tempest/common/compute.py
@@ -163,8 +163,8 @@
                             clients.servers_client.delete_server(
                                 server['id'])
                         except Exception:
-                            LOG.exception('Deleting server %s failed'
-                                          % server['id'])
+                            LOG.exception('Deleting server %s failed',
+                                          server['id'])
 
     return body, servers
 
diff --git a/tempest/common/credentials_factory.py b/tempest/common/credentials_factory.py
index bf8d30e..e6b46ed 100644
--- a/tempest/common/credentials_factory.py
+++ b/tempest/common/credentials_factory.py
@@ -233,7 +233,6 @@
 class AdminManager(clients.Manager):
     """Manager that uses admin credentials for its managed client objects"""
 
-    def __init__(self, service=None):
+    def __init__(self):
         super(AdminManager, self).__init__(
-            credentials=get_configured_admin_credentials(),
-            service=service)
+            credentials=get_configured_admin_credentials())
diff --git a/tempest/common/custom_matchers.py b/tempest/common/custom_matchers.py
index 8410541..ed11b21 100644
--- a/tempest/common/custom_matchers.py
+++ b/tempest/common/custom_matchers.py
@@ -14,7 +14,6 @@
 
 import re
 
-import six
 from testtools import helpers
 
 
@@ -217,7 +216,7 @@
     """
 
     def match(self, actual):
-        for key, value in six.iteritems(actual):
+        for key, value in actual.items():
             if key in ('content-length', 'x-account-bytes-used',
                        'x-account-container-count', 'x-account-object-count',
                        'x-container-bytes-used', 'x-container-object-count')\
diff --git a/tempest/common/dynamic_creds.py b/tempest/common/dynamic_creds.py
index 2763d16..632a876 100644
--- a/tempest/common/dynamic_creds.py
+++ b/tempest/common/dynamic_creds.py
@@ -254,7 +254,7 @@
                 msg = "There was an exception trying to setup network " \
                       "resources for tenant %s, and this error happened " \
                       "trying to clean them up: %s"
-                LOG.warning(msg % (tenant_id, cleanup_exception))
+                LOG.warning(msg, tenant_id, cleanup_exception)
             raise
         return network, subnet, router
 
@@ -316,8 +316,7 @@
                 credentials = self._create_creds(roles=credential_type)
             self._creds[str(credential_type)] = credentials
             # Maintained until tests are ported
-            LOG.info("Acquired dynamic creds:\n credentials: %s"
-                     % credentials)
+            LOG.info("Acquired dynamic creds:\n credentials: %s", credentials)
             if (self.neutron_available and
                 self.create_networks):
                 network, subnet, router = self._create_network_resources(
@@ -325,7 +324,7 @@
                 credentials.set_resources(network=network, subnet=subnet,
                                           router=router)
                 LOG.info("Created isolated network resources for : \n"
-                         + " credentials: %s" % credentials)
+                         + " credentials: %s", credentials)
         return credentials
 
     def get_primary_creds(self):
@@ -356,7 +355,7 @@
         try:
             client.delete_router(router_id)
         except lib_exc.NotFound:
-            LOG.warning('router with name: %s not found for delete' %
+            LOG.warning('router with name: %s not found for delete',
                         router_name)
 
     def _clear_isolated_subnet(self, subnet_id, subnet_name):
@@ -364,7 +363,7 @@
         try:
             client.delete_subnet(subnet_id)
         except lib_exc.NotFound:
-            LOG.warning('subnet with name: %s not found for delete' %
+            LOG.warning('subnet with name: %s not found for delete',
                         subnet_name)
 
     def _clear_isolated_network(self, network_id, network_name):
@@ -372,7 +371,7 @@
         try:
             net_client.delete_network(network_id)
         except lib_exc.NotFound:
-            LOG.warning('network with name: %s not found for delete' %
+            LOG.warning('network with name: %s not found for delete',
                         network_name)
 
     def _cleanup_default_secgroup(self, tenant):
@@ -384,8 +383,8 @@
             try:
                 nsg_client.delete_security_group(secgroup['id'])
             except lib_exc.NotFound:
-                LOG.warning('Security group %s, id %s not found for clean-up' %
-                            (secgroup['name'], secgroup['id']))
+                LOG.warning('Security group %s, id %s not found for clean-up',
+                            secgroup['name'], secgroup['id'])
 
     def _clear_isolated_net_resources(self):
         client = self.routers_admin_client
@@ -405,7 +404,7 @@
                         creds.router['id'],
                         subnet_id=creds.subnet['id'])
                 except lib_exc.NotFound:
-                    LOG.warning('router with name: %s not found for delete' %
+                    LOG.warning('router with name: %s not found for delete',
                                 creds.router['name'])
                 self._clear_isolated_router(creds.router['id'],
                                             creds.router['name'])
@@ -426,7 +425,7 @@
             try:
                 self.creds_client.delete_user(creds.user_id)
             except lib_exc.NotFound:
-                LOG.warning("user with name: %s not found for delete" %
+                LOG.warning("user with name: %s not found for delete",
                             creds.username)
             # NOTE(zhufl): Only when neutron's security_group ext is
             # enabled, _cleanup_default_secgroup will not raise error. But
@@ -437,12 +436,12 @@
                 if self.neutron_available:
                     self._cleanup_default_secgroup(creds.tenant_id)
             except lib_exc.NotFound:
-                LOG.warning("failed to cleanup tenant %s's secgroup" %
+                LOG.warning("failed to cleanup tenant %s's secgroup",
                             creds.tenant_name)
             try:
                 self.creds_client.delete_project(creds.tenant_id)
             except lib_exc.NotFound:
-                LOG.warning("tenant with name: %s not found for delete" %
+                LOG.warning("tenant with name: %s not found for delete",
                             creds.tenant_name)
         self._creds = {}
 
diff --git a/tempest/common/fixed_network.py b/tempest/common/fixed_network.py
index f57c18a..f50edbd 100644
--- a/tempest/common/fixed_network.py
+++ b/tempest/common/fixed_network.py
@@ -122,5 +122,5 @@
             params.update({"networks": [{'uuid': network['id']}]})
         else:
             LOG.warning('The provided network dict: %s was invalid and did '
-                        'not contain an id' % network)
+                        'not contain an id', network)
     return params
diff --git a/tempest/common/image.py b/tempest/common/image.py
index 95a7d1a..3618f7e 100644
--- a/tempest/common/image.py
+++ b/tempest/common/image.py
@@ -15,8 +15,6 @@
 
 import copy
 
-import six
-
 
 def get_image_meta_from_headers(resp):
     meta = {'properties': {}}
@@ -55,13 +53,13 @@
     if copy_from is not None:
         headers['x-glance-api-copy-from'] = copy_from
 
-    for key, value in six.iteritems(fields_copy.pop('properties', {})):
+    for key, value in fields_copy.pop('properties', {}).items():
         headers['x-image-meta-property-%s' % key] = str(value)
 
-    for key, value in six.iteritems(fields_copy.pop('api', {})):
+    for key, value in fields_copy.pop('api', {}).items():
         headers['x-glance-api-property-%s' % key] = str(value)
 
-    for key, value in six.iteritems(fields_copy):
+    for key, value in fields_copy.items():
         headers['x-image-meta-%s' % key] = str(value)
 
     return headers
diff --git a/tempest/common/preprov_creds.py b/tempest/common/preprov_creds.py
index 3f68ae8..6a95588 100644
--- a/tempest/common/preprov_creds.py
+++ b/tempest/common/preprov_creds.py
@@ -120,7 +120,7 @@
             if 'resources' in account:
                 resources = account.pop('resources')
             temp_hash = hashlib.md5()
-            account_for_hash = dict((k, v) for (k, v) in six.iteritems(account)
+            account_for_hash = dict((k, v) for (k, v) in account.items()
                                     if k in cls.HASH_CRED_FIELDS)
             temp_hash.update(six.text_type(account_for_hash).encode('utf-8'))
             temp_hash_key = temp_hash.hexdigest()
@@ -158,8 +158,10 @@
                 if resource == 'network':
                     hash_dict['networks'][temp_hash_key] = resources[resource]
                 else:
-                    LOG.warning('Unknown resource type %s, ignoring this field'
-                                % resource)
+                    LOG.warning(
+                        'Unknown resource type %s, ignoring this field',
+                        resource
+                    )
         return hash_dict
 
     def is_multi_user(self):
@@ -245,7 +247,7 @@
         free_hash = self._get_free_hash(useable_hashes)
         clean_creds = self._sanitize_creds(
             self.hash_dict['creds'][free_hash])
-        LOG.info('%s allocated creds:\n%s' % (self.name, clean_creds))
+        LOG.info('%s allocated creds:\n%s', self.name, clean_creds)
         return self._wrap_creds_with_network(free_hash)
 
     @lockutils.synchronized('test_accounts_io', external=True)
@@ -253,7 +255,7 @@
         hash_path = os.path.join(self.accounts_dir, hash_string)
         if not os.path.isfile(hash_path):
             LOG.warning('Expected an account lock file %s to remove, but '
-                        'one did not exist' % hash_path)
+                        'one did not exist', hash_path)
         else:
             os.remove(hash_path)
             if not os.listdir(self.accounts_dir):
@@ -278,7 +280,7 @@
         _hash = self.get_hash(creds)
         clean_creds = self._sanitize_creds(self.hash_dict['creds'][_hash])
         self.remove_hash(_hash)
-        LOG.info("%s returned allocated creds:\n%s" % (self.name, clean_creds))
+        LOG.info("%s returned allocated creds:\n%s", self.name, clean_creds)
 
     def get_primary_creds(self):
         if self._creds.get('primary'):
diff --git a/tempest/common/utils/linux/remote_client.py b/tempest/common/utils/linux/remote_client.py
index d8993bb..009812e 100644
--- a/tempest/common/utils/linux/remote_client.py
+++ b/tempest/common/utils/linux/remote_client.py
@@ -87,7 +87,7 @@
         # Shell options below add more clearness on failures,
         # path is extended for some non-cirros guest oses (centos7)
         cmd = CONF.validation.ssh_shell_prologue + " " + cmd
-        LOG.debug("Remote command: %s" % cmd)
+        LOG.debug("Remote command: %s", cmd)
         return self.ssh_client.exec_command(cmd)
 
     @debug_ssh
@@ -248,5 +248,5 @@
         except tempest.lib.exceptions.SSHExecCommandFailed:
             LOG.error("Couldn't mke2fs")
             cmd_why = 'sudo ls -lR /dev'
-            LOG.info("Contents of /dev: %s" % self.exec_command(cmd_why))
+            LOG.info("Contents of /dev: %s", self.exec_command(cmd_why))
             raise
diff --git a/tempest/common/validation_resources.py b/tempest/common/validation_resources.py
index a55ee32..88697c4 100644
--- a/tempest/common/validation_resources.py
+++ b/tempest/common/validation_resources.py
@@ -60,8 +60,7 @@
                 parent_group_id=security_group['id'], ip_protocol='icmp',
                 from_port=-1, to_port=-1)
     LOG.debug("SSH Validation resource security group with tcp and icmp "
-              "rules %s created"
-              % sg_name)
+              "rules %s created", sg_name)
     return security_group
 
 
@@ -73,7 +72,7 @@
             keypair_name = data_utils.rand_name('keypair')
             validation_data.update(os.keypairs_client.create_keypair(
                 name=keypair_name))
-            LOG.debug("Validation resource key %s created" % keypair_name)
+            LOG.debug("Validation resource key %s created", keypair_name)
         add_rule = False
         if validation_resources['security_group']:
             if validation_resources['security_group_rules']:
@@ -98,11 +97,13 @@
             try:
                 keypair_client.delete_keypair(keypair_name)
             except lib_exc.NotFound:
-                LOG.warning("Keypair %s is not found when attempting to delete"
-                            % keypair_name)
+                LOG.warning(
+                    "Keypair %s is not found when attempting to delete",
+                    keypair_name
+                )
             except Exception as exc:
-                LOG.exception('Exception raised while deleting key %s'
-                              % keypair_name)
+                LOG.exception('Exception raised while deleting key %s',
+                              keypair_name)
                 if not has_exception:
                     has_exception = exc
         if 'security_group' in validation_data:
@@ -113,15 +114,15 @@
                 security_group_client.wait_for_resource_deletion(sec_id)
             except lib_exc.NotFound:
                 LOG.warning("Security group %s is not found when attempting "
-                            "to delete" % sec_id)
+                            "to delete", sec_id)
             except lib_exc.Conflict as exc:
                 LOG.exception('Conflict while deleting security '
-                              'group %s VM might not be deleted ' % sec_id)
+                              'group %s VM might not be deleted', sec_id)
                 if not has_exception:
                     has_exception = exc
             except Exception as exc:
                 LOG.exception('Exception raised while deleting security '
-                              'group %s ' % sec_id)
+                              'group %s', sec_id)
                 if not has_exception:
                     has_exception = exc
         if 'floating_ip' in validation_data:
@@ -131,10 +132,9 @@
                 floating_client.delete_floating_ip(fip_id)
             except lib_exc.NotFound:
                 LOG.warning('Floating ip %s not found while attempting to '
-                            'delete' % fip_id)
+                            'delete', fip_id)
             except Exception as exc:
-                LOG.exception('Exception raised while deleting ip %s '
-                              % fip_id)
+                LOG.exception('Exception raised while deleting ip %s', fip_id)
                 if not has_exception:
                     has_exception = exc
     if has_exception:
diff --git a/tempest/config.py b/tempest/config.py
index 281e283..0e45f2e 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -1183,7 +1183,7 @@
 
         logging.setup(_CONF, 'tempest')
         LOG = logging.getLogger('tempest')
-        LOG.info("Using tempest config file %s" % path)
+        LOG.info("Using tempest config file %s", path)
         register_opts()
         self._set_attrs()
         if parse_conf:
diff --git a/tempest/lib/cli/base.py b/tempest/lib/cli/base.py
index 72a15b5..5d7fbe3 100644
--- a/tempest/lib/cli/base.py
+++ b/tempest/lib/cli/base.py
@@ -54,7 +54,7 @@
     cmd = ' '.join([prefix, os.path.join(cli_dir, cmd),
                     flags, action, params])
     cmd = cmd.strip()
-    LOG.info("running: '%s'" % cmd)
+    LOG.info("running: '%s'", cmd)
     if six.PY2:
         cmd = cmd.encode('utf-8')
     cmd = shlex.split(cmd)
diff --git a/tempest/lib/cli/output_parser.py b/tempest/lib/cli/output_parser.py
index 0313505..c71c7a7 100644
--- a/tempest/lib/cli/output_parser.py
+++ b/tempest/lib/cli/output_parser.py
@@ -112,7 +112,7 @@
             if label is None:
                 label = line
             else:
-                LOG.warning('Invalid line between tables: %s' % line)
+                LOG.warning('Invalid line between tables: %s', line)
     if len(table_) > 0:
         LOG.warning('Missing end of table')
 
@@ -140,7 +140,7 @@
             columns = _table_columns(line)
             continue
         if '|' not in line:
-            LOG.warning('skipping invalid table line: %s' % line)
+            LOG.warning('skipping invalid table line: %s', line)
             continue
         row = []
         for col in columns:
diff --git a/tempest/lib/common/cred_client.py b/tempest/lib/common/cred_client.py
index 3f10dee..ea06011 100644
--- a/tempest/lib/common/cred_client.py
+++ b/tempest/lib/common/cred_client.py
@@ -78,8 +78,8 @@
                                                           user['id'],
                                                           role['id'])
         except lib_exc.Conflict:
-            LOG.debug("Role %s already assigned on project %s for user %s" % (
-                role['id'], project['id'], user['id']))
+            LOG.debug("Role %s already assigned on project %s for user %s",
+                      role['id'], project['id'], user['id'])
 
     @abc.abstractmethod
     def get_credentials(self, user, project, password):
diff --git a/tempest/lib/common/rest_client.py b/tempest/lib/common/rest_client.py
index 2d2771f..31d2ba5 100644
--- a/tempest/lib/common/rest_client.py
+++ b/tempest/lib/common/rest_client.py
@@ -406,8 +406,8 @@
     def _log_request_start(self, method, req_url):
         caller_name = test_utils.find_test_caller()
         if self.trace_requests and re.search(self.trace_requests, caller_name):
-            self.LOG.debug('Starting Request (%s): %s %s' %
-                           (caller_name, method, req_url))
+            self.LOG.debug('Starting Request (%s): %s %s', caller_name,
+                           method, req_url)
 
     def _log_request_full(self, resp, req_headers=None, req_body=None,
                           resp_body=None, extra=None):
@@ -423,11 +423,11 @@
         Body: %s"""
 
         self.LOG.debug(
-            log_fmt % (
-                str(req_headers),
-                self._safe_body(req_body),
-                str(resp_log),
-                self._safe_body(resp_body)),
+            log_fmt,
+            str(req_headers),
+            self._safe_body(req_body),
+            str(resp_log),
+            self._safe_body(resp_body),
             extra=extra)
 
     def _log_request(self, method, req_url, resp,
@@ -445,12 +445,12 @@
         if secs:
             secs = " %.3fs" % secs
         self.LOG.info(
-            'Request (%s): %s %s %s%s' % (
-                caller_name,
-                resp['status'],
-                method,
-                req_url,
-                secs),
+            'Request (%s): %s %s %s%s',
+            caller_name,
+            resp['status'],
+            method,
+            req_url,
+            secs,
             extra=extra)
 
         # Also look everything at DEBUG if you want to filter this
diff --git a/tempest/lib/common/utils/test_utils.py b/tempest/lib/common/utils/test_utils.py
index 3b28701..bd0db7c 100644
--- a/tempest/lib/common/utils/test_utils.py
+++ b/tempest/lib/common/utils/test_utils.py
@@ -74,7 +74,7 @@
     # prevents frame leaks
     del frame
     if caller_name is None:
-        LOG.debug("Sane call name not found in %s" % names)
+        LOG.debug("Sane call name not found in %s", names)
     return caller_name
 
 
diff --git a/tempest/lib/services/clients.py b/tempest/lib/services/clients.py
index 0e8e3c6..262a894 100644
--- a/tempest/lib/services/clients.py
+++ b/tempest/lib/services/clients.py
@@ -41,6 +41,7 @@
     return {
         'compute': compute,
         'identity.v2': identity.v2,
+        'identity.v3': identity.v3,
         'image.v1': image.v1,
         'image.v2': image.v2,
         'network': network,
@@ -55,7 +56,7 @@
     # NOTE(andreaf) This list will exists only as long the remain clients
     # are migrated to tempest.lib, and it will then be deleted without
     # deprecation or advance notice
-    return set(['identity.v3', 'object-storage'])
+    return set(['object-storage'])
 
 
 def available_modules():
@@ -373,7 +374,7 @@
                 except Exception:
                     LOG.exception(
                         'Failed to register service client from plugin %s '
-                        'with parameters %s' % (plugin, service_client))
+                        'with parameters %s', plugin, service_client)
                     raise
 
     def register_service_client_module(self, name, service_version,
diff --git a/tempest/lib/services/identity/__init__.py b/tempest/lib/services/identity/__init__.py
index e69de29..941a10e 100644
--- a/tempest/lib/services/identity/__init__.py
+++ b/tempest/lib/services/identity/__init__.py
@@ -0,0 +1,18 @@
+# Copyright (c) 2016 Hewlett-Packard Enterprise Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+from tempest.lib.services.identity import v2
+from tempest.lib.services.identity import v3
+
+__all__ = ['v2', 'v3']
diff --git a/tempest/lib/services/identity/v2/token_client.py b/tempest/lib/services/identity/v2/token_client.py
index a5d7c86..c4fd483 100644
--- a/tempest/lib/services/identity/v2/token_client.py
+++ b/tempest/lib/services/identity/v2/token_client.py
@@ -117,8 +117,8 @@
     LOG = logging.getLogger(__name__)
 
     def _warn(self):
-        self.LOG.warning("%s class was deprecated and renamed to %s" %
-                         (self.__class__.__name__, 'TokenClient'))
+        self.LOG.warning("%s class was deprecated and renamed to %s",
+                         self.__class__.__name__, 'TokenClient')
 
     def __init__(self, *args, **kwargs):
         self._warn()
diff --git a/tempest/lib/services/identity/v3/__init__.py b/tempest/lib/services/identity/v3/__init__.py
index e69de29..8058d51 100644
--- a/tempest/lib/services/identity/v3/__init__.py
+++ b/tempest/lib/services/identity/v3/__init__.py
@@ -0,0 +1,38 @@
+# Copyright (c) 2016 Hewlett-Packard Enterprise Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+from tempest.lib.services.identity.v3.credentials_client import \
+    CredentialsClient
+from tempest.lib.services.identity.v3.domains_client import DomainsClient
+from tempest.lib.services.identity.v3.endpoints_client import EndPointsClient
+from tempest.lib.services.identity.v3.groups_client import GroupsClient
+from tempest.lib.services.identity.v3.identity_client import IdentityClient
+from tempest.lib.services.identity.v3.inherited_roles_client import \
+    InheritedRolesClient
+from tempest.lib.services.identity.v3.policies_client import PoliciesClient
+from tempest.lib.services.identity.v3.projects_client import ProjectsClient
+from tempest.lib.services.identity.v3.regions_client import RegionsClient
+from tempest.lib.services.identity.v3.role_assignments_client import \
+    RoleAssignmentsClient
+from tempest.lib.services.identity.v3.roles_client import RolesClient
+from tempest.lib.services.identity.v3.services_client import ServicesClient
+from tempest.lib.services.identity.v3.token_client import V3TokenClient
+from tempest.lib.services.identity.v3.trusts_client import TrustsClient
+from tempest.lib.services.identity.v3.users_client import UsersClient
+
+__all__ = ['CredentialsClient', 'DomainsClient', 'EndPointsClient',
+           'GroupsClient', 'IdentityClient', 'InheritedRolesClient',
+           'PoliciesClient', 'ProjectsClient', 'RegionsClient',
+           'RoleAssignmentsClient', 'RolesClient', 'ServicesClient',
+           'V3TokenClient', 'TrustsClient', 'UsersClient', ]
diff --git a/tempest/services/identity/v3/json/domains_client.py b/tempest/lib/services/identity/v3/domains_client.py
similarity index 100%
rename from tempest/services/identity/v3/json/domains_client.py
rename to tempest/lib/services/identity/v3/domains_client.py
diff --git a/tempest/lib/services/identity/v3/token_client.py b/tempest/lib/services/identity/v3/token_client.py
index c1f7e7b..06927f4 100644
--- a/tempest/lib/services/identity/v3/token_client.py
+++ b/tempest/lib/services/identity/v3/token_client.py
@@ -179,8 +179,8 @@
     LOG = logging.getLogger(__name__)
 
     def _warn(self):
-        self.LOG.warning("%s class was deprecated and renamed to %s" %
-                         (self.__class__.__name__, 'V3TokenClient'))
+        self.LOG.warning("%s class was deprecated and renamed to %s",
+                         self.__class__.__name__, 'V3TokenClient')
 
     def __init__(self, *args, **kwargs):
         self._warn()
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 376dd19..2da2f92 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -20,7 +20,6 @@
 from oslo_log import log
 from oslo_serialization import jsonutils as json
 from oslo_utils import netutils
-import six
 
 from tempest.common import compute
 from tempest.common import image as common_image
@@ -380,9 +379,9 @@
         img_disk_format = CONF.scenario.img_disk_format
         img_properties = CONF.scenario.img_properties
         LOG.debug("paths: img: %s, container_format: %s, disk_format: %s, "
-                  "properties: %s, ami: %s, ari: %s, aki: %s" %
-                  (img_path, img_container_format, img_disk_format,
-                   img_properties, ami_img_path, ari_img_path, aki_img_path))
+                  "properties: %s, ami: %s, ari: %s, aki: %s",
+                  img_path, img_container_format, img_disk_format,
+                  img_properties, ami_img_path, ari_img_path, aki_img_path)
         try:
             image = self._image_create('scenario-img',
                                        img_container_format,
@@ -397,7 +396,7 @@
             image = self._image_create('scenario-ami', 'ami',
                                        path=ami_img_path,
                                        properties=properties)
-        LOG.debug("image:%s" % image)
+        LOG.debug("image:%s", image)
 
         return image
 
@@ -530,14 +529,14 @@
 
         caller = test_utils.find_test_caller()
         LOG.debug('%(caller)s begins to ping %(ip)s in %(timeout)s sec and the'
-                  ' expected result is %(should_succeed)s' % {
+                  ' expected result is %(should_succeed)s', **{
                       'caller': caller, 'ip': ip_address, 'timeout': timeout,
                       'should_succeed':
                       'reachable' if should_succeed else 'unreachable'
                   })
         result = test_utils.call_until_true(ping, timeout, 1)
         LOG.debug('%(caller)s finishes ping %(ip)s in %(timeout)s sec and the '
-                  'ping result is %(result)s' % {
+                  'ping result is %(result)s', **{
                       'caller': caller, 'ip': ip_address, 'timeout': timeout,
                       'result': 'expected' if result else 'unexpected'
                   })
@@ -578,8 +577,8 @@
                                           msg=None, servers=None, mtu=None):
         # The target login is assumed to have been configured for
         # key-based authentication by cloud-init.
-        LOG.debug('checking network connections to IP %s with user: %s' %
-                  (ip_address, username))
+        LOG.debug('checking network connections to IP %s with user: %s',
+                  ip_address, username)
         try:
             self.check_vm_connectivity(ip_address,
                                        username,
@@ -920,7 +919,7 @@
         # The target login is assumed to have been configured for
         # key-based authentication by cloud-init.
         try:
-            for net_name, ip_addresses in six.iteritems(server['addresses']):
+            for net_name, ip_addresses in server['addresses'].items():
                 for ip_address in ip_addresses:
                     self.check_vm_connectivity(ip_address['addr'],
                                                username,
@@ -948,7 +947,7 @@
                 source.ping_host(dest, nic=nic)
             except lib_exc.SSHExecCommandFailed:
                 LOG.warning('Failed to ping IP: %s via a ssh connection '
-                            'from: %s.' % (dest, source.ssh_client.host))
+                            'from: %s.', dest, source.ssh_client.host)
                 return not should_succeed
             return should_succeed
 
@@ -1315,7 +1314,7 @@
         self.container_client.create_container(name)
         # look for the container to assure it is created
         self.list_and_check_container_objects(name)
-        LOG.debug('Container %s created' % (name))
+        LOG.debug('Container %s created', name)
         self.addCleanup(test_utils.call_and_ignore_notfound_exc,
                         self.container_client.delete_container,
                         name)
@@ -1323,7 +1322,7 @@
 
     def delete_container(self, container_name):
         self.container_client.delete_container(container_name)
-        LOG.debug('Container %s deleted' % (container_name))
+        LOG.debug('Container %s deleted', container_name)
 
     def upload_object_to_container(self, container_name, obj_name=None):
         obj_name = obj_name or data_utils.rand_name('swift-scenario-object')
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index 0605902..1279484 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -198,12 +198,11 @@
     @test.idempotent_id('a4858f6c-401e-4155-9a49-d5cd053d1a2f')
     @testtools.skipUnless(CONF.compute_feature_enabled.cold_migration,
                           'Cold migration is not available.')
+    @testtools.skipUnless(CONF.compute.min_compute_nodes > 1,
+                          'Less than 2 compute nodes, skipping multinode '
+                          'tests.')
     @test.services('compute', 'network')
     def test_server_connectivity_cold_migration(self):
-        if CONF.compute.min_compute_nodes < 2:
-            msg = "Less than 2 compute nodes, skipping multinode tests."
-            raise self.skipException(msg)
-
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
         floating_ip = self._setup_network(server, keypair)
@@ -220,3 +219,28 @@
         dst_host = self._get_host_for_server(server['id'])
 
         self.assertNotEqual(src_host, dst_host)
+
+    @test.idempotent_id('25b188d7-0183-4b1e-a11d-15840c8e2fd6')
+    @testtools.skipUnless(CONF.compute_feature_enabled.cold_migration,
+                          'Cold migration is not available.')
+    @testtools.skipUnless(CONF.compute.min_compute_nodes > 1,
+                          'Less than 2 compute nodes, skipping multinode '
+                          'tests.')
+    @test.services('compute', 'network')
+    def test_server_connectivity_cold_migration_revert(self):
+        keypair = self.create_keypair()
+        server = self._setup_server(keypair)
+        floating_ip = self._setup_network(server, keypair)
+        src_host = self._get_host_for_server(server['id'])
+        self._wait_server_status_and_check_network_connectivity(
+            server, keypair, floating_ip)
+
+        self.admin_servers_client.migrate_server(server['id'])
+        waiters.wait_for_server_status(self.servers_client, server['id'],
+                                       'VERIFY_RESIZE')
+        self.servers_client.revert_resize_server(server['id'])
+        self._wait_server_status_and_check_network_connectivity(
+            server, keypair, floating_ip)
+        dst_host = self._get_host_for_server(server['id'])
+
+        self.assertEqual(src_host, dst_host)
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index 4bbe4eb..f9aa3e7 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -615,29 +615,44 @@
     def test_update_instance_port_admin_state(self):
         """Test to update admin_state_up attribute of instance port
 
-        1. Check public connectivity before updating
+        1. Check public and project connectivity before updating
                 admin_state_up attribute of instance port to False
-        2. Check public connectivity after updating
+        2. Check public and project connectivity after updating
                 admin_state_up attribute of instance port to False
-        3. Check public connectivity after updating
+        3. Check public and project connectivity after updating
                 admin_state_up attribute of instance port to True
         """
         self._setup_network_and_servers()
         floating_ip, server = self.floating_ip_tuple
         server_id = server['id']
         port_id = self._list_ports(device_id=server_id)[0]['id']
+        server_pip = server['addresses'][self.network['name']][0]['addr']
+
+        server2 = self._create_server(self.network)
+        server2_fip = self.create_floating_ip(server2)
+
+        private_key = self._get_server_key(server2)
+        ssh_client = self.get_remote_client(server2_fip['floating_ip_address'],
+                                            private_key=private_key)
+
         self.check_public_network_connectivity(
             should_connect=True, msg="before updating "
             "admin_state_up of instance port to False")
+        self._check_remote_connectivity(ssh_client, dest=server_pip,
+                                        should_succeed=True)
         self.ports_client.update_port(port_id, admin_state_up=False)
         self.check_public_network_connectivity(
             should_connect=False, msg="after updating "
             "admin_state_up of instance port to False",
             should_check_floating_ip_status=False)
+        self._check_remote_connectivity(ssh_client, dest=server_pip,
+                                        should_succeed=False)
         self.ports_client.update_port(port_id, admin_state_up=True)
         self.check_public_network_connectivity(
             should_connect=True, msg="after updating "
             "admin_state_up of instance port to True")
+        self._check_remote_connectivity(ssh_client, dest=server_pip,
+                                        should_succeed=True)
 
     @test.idempotent_id('759462e1-8535-46b0-ab3a-33aa45c55aaa')
     @test.services('compute', 'network')
diff --git a/tempest/scenario/test_network_v6.py b/tempest/scenario/test_network_v6.py
index 40b3317..7acf107 100644
--- a/tempest/scenario/test_network_v6.py
+++ b/tempest/scenario/test_network_v6.py
@@ -14,8 +14,6 @@
 #    under the License.
 import functools
 
-import six
-
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.scenario import manager
@@ -112,7 +110,7 @@
     @staticmethod
     def define_server_ips(srv):
         ips = {'4': None, '6': []}
-        for net_name, nics in six.iteritems(srv['addresses']):
+        for net_name, nics in srv['addresses'].items():
             for nic in nics:
                 if nic['version'] == 6:
                     ips['6'].append(nic['addr'])
diff --git a/tempest/scenario/test_stamp_pattern.py b/tempest/scenario/test_stamp_pattern.py
index dff00e7..b10be11 100644
--- a/tempest/scenario/test_stamp_pattern.py
+++ b/tempest/scenario/test_stamp_pattern.py
@@ -86,7 +86,7 @@
 
         def _func():
             disks = ssh.get_disks()
-            LOG.debug("Disks: %s" % disks)
+            LOG.debug("Disks: %s", disks)
             return CONF.compute.volume_device_name in disks
 
         if not test_utils.call_until_true(_func,
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index 46aebfe..2c8b618 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -118,36 +118,36 @@
         volume_origin = self._create_volume_from_image()
         instance_1st = self._boot_instance_from_volume(volume_origin['id'],
                                                        keypair, security_group)
-        LOG.info("Booted first instance: %s" % instance_1st)
+        LOG.info("Booted first instance: %s", instance_1st)
 
         # write content to volume on instance
-        LOG.info("Setting timestamp in instance %s" % instance_1st)
+        LOG.info("Setting timestamp in instance %s", instance_1st)
         ip_instance_1st = self.get_server_ip(instance_1st)
         timestamp = self.create_timestamp(ip_instance_1st,
                                           private_key=keypair['private_key'])
 
         # delete instance
-        LOG.info("Deleting first instance: %s" % instance_1st)
+        LOG.info("Deleting first instance: %s", instance_1st)
         self._delete_server(instance_1st)
 
         # create a 2nd instance from volume
         instance_2nd = self._boot_instance_from_volume(volume_origin['id'],
                                                        keypair, security_group)
-        LOG.info("Booted second instance %s" % instance_2nd)
+        LOG.info("Booted second instance %s", instance_2nd)
 
         # check the content of written file
-        LOG.info("Getting timestamp in instance %s" % instance_2nd)
+        LOG.info("Getting timestamp in instance %s", instance_2nd)
         ip_instance_2nd = self.get_server_ip(instance_2nd)
         timestamp2 = self.get_timestamp(ip_instance_2nd,
                                         private_key=keypair['private_key'])
         self.assertEqual(timestamp, timestamp2)
 
         # snapshot a volume
-        LOG.info("Creating snapshot from volume: %s" % volume_origin['id'])
+        LOG.info("Creating snapshot from volume: %s", volume_origin['id'])
         snapshot = self._create_snapshot_from_volume(volume_origin['id'])
 
         # create a 3rd instance from snapshot
-        LOG.info("Creating third instance from snapshot: %s" % snapshot['id'])
+        LOG.info("Creating third instance from snapshot: %s", snapshot['id'])
         volume = self.create_volume(snapshot_id=snapshot['id'],
                                     size=snapshot['size'])
         LOG.info("Booting third instance from snapshot")
@@ -157,7 +157,7 @@
         LOG.info("Booted third instance %s", server_from_snapshot)
 
         # check the content of written file
-        LOG.info("Logging into third instance to get timestamp: %s" %
+        LOG.info("Logging into third instance to get timestamp: %s",
                  server_from_snapshot)
         server_from_snapshot_ip = self.get_server_ip(server_from_snapshot)
         timestamp3 = self.get_timestamp(server_from_snapshot_ip,
diff --git a/tempest/services/identity/__init__.py b/tempest/services/identity/__init__.py
deleted file mode 100644
index 53c223f..0000000
--- a/tempest/services/identity/__init__.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# Copyright (c) 2016 Hewlett-Packard Enterprise Development Company, L.P.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not
-# use this file except in compliance with the License. You may obtain a copy of
-# the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations under
-# the License.
-
-from tempest.lib.services.identity import v2
-from tempest.services.identity import v3
-
-__all__ = ['v2', 'v3']
diff --git a/tempest/services/identity/v3/__init__.py b/tempest/services/identity/v3/__init__.py
deleted file mode 100644
index 6e64a7d..0000000
--- a/tempest/services/identity/v3/__init__.py
+++ /dev/null
@@ -1,38 +0,0 @@
-# Copyright (c) 2016 Hewlett-Packard Enterprise Development Company, L.P.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may not
-# use this file except in compliance with the License. You may obtain a copy of
-# the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations under
-# the License.
-
-from tempest.lib.services.identity.v3.credentials_client import \
-    CredentialsClient
-from tempest.lib.services.identity.v3.endpoints_client import EndPointsClient
-from tempest.lib.services.identity.v3.groups_client import GroupsClient
-from tempest.lib.services.identity.v3.identity_client import IdentityClient
-from tempest.lib.services.identity.v3.inherited_roles_client import \
-    InheritedRolesClient
-from tempest.lib.services.identity.v3.policies_client import PoliciesClient
-from tempest.lib.services.identity.v3.projects_client import ProjectsClient
-from tempest.lib.services.identity.v3.regions_client import RegionsClient
-from tempest.lib.services.identity.v3.role_assignments_client import \
-    RoleAssignmentsClient
-from tempest.lib.services.identity.v3.roles_client import RolesClient
-from tempest.lib.services.identity.v3.services_client import ServicesClient
-from tempest.lib.services.identity.v3.token_client import V3TokenClient
-from tempest.lib.services.identity.v3.trusts_client import TrustsClient
-from tempest.lib.services.identity.v3.users_client import UsersClient
-from tempest.services.identity.v3.json.domains_client import DomainsClient
-
-__all__ = ['CredentialsClient', 'EndPointsClient', 'GroupsClient',
-           'IdentityClient', 'InheritedRolesClient', 'PoliciesClient',
-           'ProjectsClient', 'RegionsClient', 'RoleAssignmentsClient',
-           'RolesClient', 'ServicesClient', 'V3TokenClient', 'TrustsClient',
-           'UsersClient', 'DomainsClient', ]
diff --git a/tempest/services/identity/v3/json/__init__.py b/tempest/services/identity/v3/json/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/tempest/services/identity/v3/json/__init__.py
+++ /dev/null
diff --git a/tempest/services/object_storage/object_client.py b/tempest/services/object_storage/object_client.py
index 9445e34..6d656ec 100644
--- a/tempest/services/object_storage/object_client.py
+++ b/tempest/services/object_storage/object_client.py
@@ -13,7 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
 from six.moves import http_client as httplib
 from six.moves.urllib import parse as urlparse
 
@@ -189,7 +188,7 @@
         # Send the PUT request and the headers including the "Expect" header
         conn.putrequest('PUT', path)
 
-        for header, value in six.iteritems(headers):
+        for header, value in headers.items():
             conn.putheader(header, value)
         conn.endheaders()
 
diff --git a/tempest/test.py b/tempest/test.py
index 4cc2a2b..039afa1 100644
--- a/tempest/test.py
+++ b/tempest/test.py
@@ -156,7 +156,7 @@
                 if status_code is None or status_code == exc_status_code:
                     LOG.error('Hints: This test was made for the bug %s. '
                               'The failure could be related to '
-                              'https://launchpad.net/bugs/%s' % (bug, bug))
+                              'https://launchpad.net/bugs/%s', bug, bug)
                 raise exc
         return wrapper
     return decorator
@@ -219,7 +219,6 @@
     """
 
     setUpClassCalled = False
-    _service = None
 
     # NOTE(andreaf) credentials holds a list of the credentials to be allocated
     # at class setup time. Credential types can be 'primary', 'alt', 'admin' or
@@ -263,8 +262,8 @@
             cls.resource_setup()
         except Exception:
             etype, value, trace = sys.exc_info()
-            LOG.info("%s raised in %s.setUpClass. Invoking tearDownClass." % (
-                     etype, cls.__name__))
+            LOG.info("%s raised in %s.setUpClass. Invoking tearDownClass.",
+                     etype, cls.__name__)
             cls.tearDownClass()
             try:
                 six.reraise(etype, value, trace)
@@ -296,9 +295,9 @@
                 # resources that were successfully setup in resource_cleanup,
                 # log AttributeError as info instead of exception.
                 if tetype is AttributeError and name == 'resources':
-                    LOG.info("tearDownClass of %s failed: %s" % (name, te))
+                    LOG.info("tearDownClass of %s failed: %s", name, te)
                 else:
-                    LOG.exception("teardown of %s failed: %s" % (name, te))
+                    LOG.exception("teardown of %s failed: %s", name, te)
                 if not etype:
                     etype, value, trace = sys_exec_info
         # If exceptions were raised during teardown, and not before, re-raise
@@ -533,8 +532,7 @@
             else:
                 raise lib_exc.InvalidCredentials(
                     "Invalid credentials type %s" % credential_type)
-        manager = cls.client_manager(credentials=creds.credentials,
-                                     service=cls._service)
+        manager = cls.client_manager(credentials=creds.credentials)
         # NOTE(andreaf) Ensure credentials have user and project id fields.
         # It may not be the case when using pre-provisioned credentials.
         manager.auth_provider.set_auth()
diff --git a/tempest/test_discover/plugins.py b/tempest/test_discover/plugins.py
index f8d5d9d..e9f59af 100644
--- a/tempest/test_discover/plugins.py
+++ b/tempest/test_discover/plugins.py
@@ -143,7 +143,7 @@
                 plug.obj.register_opts(conf)
             except Exception:
                 LOG.exception('Plugin %s raised an exception trying to run '
-                              'register_opts' % plug.name)
+                              'register_opts', plug.name)
 
     def get_plugin_options_list(self):
         plugin_options = []
@@ -163,4 +163,4 @@
                         plug.name, service_clients)
             except Exception:
                 LOG.exception('Plugin %s raised an exception trying to run '
-                              'get_service_clients' % plug.name)
+                              'get_service_clients', plug.name)
diff --git a/tempest/tests/cmd/test_account_generator.py b/tempest/tests/cmd/test_account_generator.py
index b08954f..6773b2f 100644
--- a/tempest/tests/cmd/test_account_generator.py
+++ b/tempest/tests/cmd/test_account_generator.py
@@ -75,7 +75,7 @@
         fake_domain_list = {'domains': [{'id': 'fake_domain',
                                          'name': 'Fake_Domain'}]}
         self.useFixture(fixtures.MockPatch(''.join([
-            'tempest.services.identity.v3.json.domains_client.'
+            'tempest.lib.services.identity.v3.domains_client.'
             'DomainsClient.list_domains']),
             return_value=fake_domain_list))
         self.useFixture(fixtures.MockPatch(
@@ -121,7 +121,7 @@
         super(TestAccountGeneratorV3, self).setUp()
         fake_domain_list = {'domains': [{'id': 'fake_domain'}]}
         self.useFixture(fixtures.MockPatch(''.join([
-            'tempest.services.identity.v3.json.domains_client.'
+            'tempest.lib.services.identity.v3.domains_client.'
             'DomainsClient.list_domains']),
             return_value=fake_domain_list))
 
diff --git a/tempest/tests/common/test_dynamic_creds.py b/tempest/tests/common/test_dynamic_creds.py
index a90ca8a..b4fbd50 100644
--- a/tempest/tests/common/test_dynamic_creds.py
+++ b/tempest/tests/common/test_dynamic_creds.py
@@ -27,6 +27,7 @@
     v2_tenants_client
 from tempest.lib.services.identity.v2 import token_client as v2_token_client
 from tempest.lib.services.identity.v2 import users_client as v2_users_client
+from tempest.lib.services.identity.v3 import domains_client
 from tempest.lib.services.identity.v3 import identity_client as v3_iden_client
 from tempest.lib.services.identity.v3 import projects_client as \
     v3_projects_client
@@ -35,7 +36,6 @@
 from tempest.lib.services.identity.v3 import users_client as \
     v3_users_client
 from tempest.lib.services.network import routers_client
-from tempest.services.identity.v3.json import domains_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests.lib import fake_http
diff --git a/tempest/tests/common/test_preprov_creds.py b/tempest/tests/common/test_preprov_creds.py
index f824b6c..1c9982c 100644
--- a/tempest/tests/common/test_preprov_creds.py
+++ b/tempest/tests/common/test_preprov_creds.py
@@ -101,7 +101,7 @@
             preprov_creds.PreProvisionedCredentialProvider.HASH_CRED_FIELDS)
         for account in accounts_list:
             hash = hashlib.md5()
-            account_for_hash = dict((k, v) for (k, v) in six.iteritems(account)
+            account_for_hash = dict((k, v) for (k, v) in account.items()
                                     if k in hash_fields)
             hash.update(six.text_type(account_for_hash).encode('utf-8'))
             temp_hash = hash.hexdigest()
diff --git a/tempest/tests/lib/services/identity/v3/test_domains_client.py b/tempest/tests/lib/services/identity/v3/test_domains_client.py
new file mode 100644
index 0000000..f89ced7
--- /dev/null
+++ b/tempest/tests/lib/services/identity/v3/test_domains_client.py
@@ -0,0 +1,138 @@
+# Copyright 2016 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from tempest.lib.services.identity.v3 import domains_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestDomainsClient(base.BaseServiceTest):
+    FAKE_CREATE_DOMAIN = {
+        "domain": {
+            "description": "Domain description",
+            "enabled": True,
+            "name": "myDomain"
+        }
+    }
+
+    FAKE_DOMAIN_INFO = {
+        "domain": {
+            "description": "Used for swift functional testing",
+            "enabled": True,
+            "id": "5a75994a3",
+            "links": {
+                "self": "http://example.com/identity/v3/domains/5a75994a3"
+            },
+            "name": "swift_test"
+        }
+    }
+
+    FAKE_LIST_DOMAINS = {
+        "domains": [
+            {
+                "description": "Used for swift functional testing",
+                "enabled": True,
+                "id": "5a75994a3",
+                "links": {
+                    "self": "http://example.com/identity/v3/domains/5a75994a3"
+                },
+                "name": "swift_test"
+            },
+            {
+                "description": "Owns users and tenants available on " +
+                               "Identity API",
+                "enabled": True,
+                "id": "default",
+                "links": {
+                    "self": "http://example.com/identity/v3/domains/default"
+                },
+                "name": "Default"
+            }
+        ],
+        "links": {
+            "next": None,
+            "previous": None,
+            "self": "http://example.com/identity/v3/domains"
+        }
+    }
+
+    def setUp(self):
+        super(TestDomainsClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = domains_client.DomainsClient(fake_auth,
+                                                   'identity',
+                                                   'regionOne')
+
+    def _test_create_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_domain,
+            'tempest.lib.common.rest_client.RestClient.post',
+            self.FAKE_CREATE_DOMAIN,
+            bytes_body,
+            status=201)
+
+    def _test_show_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.show_domain,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_DOMAIN_INFO,
+            bytes_body,
+            domain_id="5a75994a3")
+
+    def _test_list_domains(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_domains,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_DOMAINS,
+            bytes_body)
+
+    def _test_update_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.update_domain,
+            'tempest.lib.common.rest_client.RestClient.patch',
+            self.FAKE_DOMAIN_INFO,
+            bytes_body,
+            domain_id="5a75994a3")
+
+    def test_create_domain_with_str_body(self):
+        self._test_create_domain()
+
+    def test_create_domain_with_bytes_body(self):
+        self._test_create_domain(bytes_body=True)
+
+    def test_show_domain_with_str_body(self):
+        self._test_show_domain()
+
+    def test_show_domain_with_bytes_body(self):
+        self._test_show_domain(bytes_body=True)
+
+    def test_list_domain_with_str_body(self):
+        self._test_list_domains()
+
+    def test_list_domain_with_bytes_body(self):
+        self._test_list_domains(bytes_body=True)
+
+    def test_update_domain_with_str_body(self):
+        self._test_update_domain()
+
+    def test_update_domain_with_bytes_body(self):
+        self._test_update_domain(bytes_body=True)
+
+    def test_delete_domain(self):
+        self.check_service_client_function(
+            self.client.delete_domain,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            domain_id="5a75994a3",
+            status=204)
diff --git a/tempest/tests/negative/__init__.py b/tempest/tests/negative/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/tempest/tests/negative/__init__.py
+++ /dev/null
diff --git a/tempest/tests/services/object_storage/test_object_client.py b/tempest/tests/services/object_storage/test_object_client.py
index cc1dc1a..748614c 100644
--- a/tempest/tests/services/object_storage/test_object_client.py
+++ b/tempest/tests/services/object_storage/test_object_client.py
@@ -15,7 +15,6 @@
 
 
 import mock
-import six
 
 from tempest.lib import exceptions
 from tempest.services.object_storage import object_client
@@ -85,7 +84,7 @@
         # Verify that headers were written, including "Expect:100-continue"
         calls = []
 
-        for header, value in six.iteritems(expected_hdrs):
+        for header, value in expected_hdrs.items():
             calls.append(mock.call(header, value))
 
         mock_poc.return_value.putheader.assert_has_calls(calls, False)
diff --git a/tox.ini b/tox.ini
index 7a36e84..46823d8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -146,7 +146,7 @@
 ignore = E125,E123,E129
 show-source = True
 exclude = .git,.venv,.tox,dist,doc,*egg
-enable-extensions = H106,H203
+enable-extensions = H106,H203,H904
 
 [testenv:releasenotes]
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html