diff --git a/.mailmap b/.mailmap
index 3ea6ab0..7898e69 100644
--- a/.mailmap
+++ b/.mailmap
@@ -13,9 +13,10 @@
 Ken'ichi Ohmichi <ken-oomichi@wx.jp.nec.com> <oomichi@mxs.nes.nec.co.jp>
 Ken'ichi Ohmichi <ken-oomichi@wx.jp.nec.com> <ken1ohmichi@gmail.com>
 Marc Koderer <marc@koderer.com> <m.koderer@telekom.de>
-Masayuki Igawa <masayuki@igawa.me> <igawa@mxs.nes.nec.co.jp>
-Masayuki Igawa <masayuki@igawa.me> <mas-igawa@ut.jp.nec.com>
-Masayuki Igawa <masayuki@igawa.me> <masayuki.igawa@gmail.com>
+Masayuki Igawa <masayuki@igawa.io> <igawa@mxs.nes.nec.co.jp>
+Masayuki Igawa <masayuki@igawa.io> <mas-igawa@ut.jp.nec.com>
+Masayuki Igawa <masayuki@igawa.io> <masayuki.igawa@gmail.com>
+Masayuki Igawa <masayuki@igawa.io> <masayuki@igawa.me>
 Matthew Treinish <mtreinish@kortar.org> <treinish@linux.vnet.ibm.com>
 Nayna Patel <nayna.patel@hp.com> <nayna.patel@hp.com>
 ravikumar-venkatesan <ravikumar.venkatesan@hp.com> <ravikumar.venkatesan@hp.com>
diff --git a/tempest/api/compute/admin/test_delete_server.py b/tempest/api/compute/admin/test_delete_server.py
index 83444b9..58cac57 100644
--- a/tempest/api/compute/admin/test_delete_server.py
+++ b/tempest/api/compute/admin/test_delete_server.py
@@ -15,11 +15,8 @@
 
 from tempest.api.compute import base
 from tempest.common import waiters
-from tempest import config
 from tempest.lib import decorators
 
-CONF = config.CONF
-
 
 class DeleteServersAdminTestJSON(base.BaseV2ComputeAdminTest):
     # NOTE: Server creations of each test class should be under 10
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index 8350f7c..5a60dc6 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -29,13 +29,11 @@
 LOG = logging.getLogger(__name__)
 
 
-class LiveMigrationTest(base.BaseV2ComputeAdminTest):
-    max_microversion = '2.24'
-    block_migration = None
+class LiveMigrationTestBase(base.BaseV2ComputeAdminTest):
 
     @classmethod
     def skip_checks(cls):
-        super(LiveMigrationTest, cls).skip_checks()
+        super(LiveMigrationTestBase, cls).skip_checks()
 
         if not CONF.compute_feature_enabled.live_migration:
             skip_msg = ("%s skipped as live-migration is "
@@ -55,11 +53,11 @@
         # TODO(mriedem): SSH validation before and after the instance is
         # live migrated would be a nice test wrinkle addition.
         cls.set_network_resources(network=True, subnet=True)
-        super(LiveMigrationTest, cls).setup_credentials()
+        super(LiveMigrationTestBase, cls).setup_credentials()
 
     @classmethod
     def setup_clients(cls):
-        super(LiveMigrationTest, cls).setup_clients()
+        super(LiveMigrationTestBase, cls).setup_clients()
         cls.admin_migration_client = cls.os_admin.migrations_client
 
     def _migrate_server_to(self, server_id, dest_host, volume_backed=False):
@@ -91,6 +89,11 @@
         self.assertEqual(target_host, self.get_host_for_server(server_id),
                          msg)
 
+
+class LiveMigrationTest(LiveMigrationTestBase):
+    max_microversion = '2.24'
+    block_migration = None
+
     def _test_live_migration(self, state='ACTIVE', volume_backed=False):
         """Tests live migration between two hosts.
 
@@ -168,7 +171,7 @@
         self.assertEqual(volume_id1, volume_id2)
 
 
-class LiveMigrationRemoteConsolesV26Test(LiveMigrationTest):
+class LiveMigrationRemoteConsolesV26Test(LiveMigrationTestBase):
     min_microversion = '2.6'
     max_microversion = 'latest'
 
diff --git a/tempest/api/identity/admin/v3/test_application_credentials.py b/tempest/api/identity/admin/v3/test_application_credentials.py
index 4a74ef8..7e802c6 100644
--- a/tempest/api/identity/admin/v3/test_application_credentials.py
+++ b/tempest/api/identity/admin/v3/test_application_credentials.py
@@ -15,13 +15,9 @@
 #    under the License.
 
 from tempest.api.identity import base
-from tempest import config
 from tempest.lib import decorators
 
 
-CONF = config.CONF
-
-
 class ApplicationCredentialsV3AdminTest(base.BaseApplicationCredentialsV3Test,
                                         base.BaseIdentityV3AdminTest):
 
diff --git a/tempest/api/identity/admin/v3/test_projects.py b/tempest/api/identity/admin/v3/test_projects.py
index bc94a8e..6ddf42e 100644
--- a/tempest/api/identity/admin/v3/test_projects.py
+++ b/tempest/api/identity/admin/v3/test_projects.py
@@ -14,12 +14,9 @@
 #    under the License.
 
 from tempest.api.identity import base
-from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
-CONF = config.CONF
-
 
 class ProjectsTestJSON(base.BaseIdentityV3AdminTest):
 
diff --git a/tempest/api/identity/admin/v3/test_roles.py b/tempest/api/identity/admin/v3/test_roles.py
index 62ced19..47f663c 100644
--- a/tempest/api/identity/admin/v3/test_roles.py
+++ b/tempest/api/identity/admin/v3/test_roles.py
@@ -14,14 +14,11 @@
 #    under the License.
 
 from tempest.api.identity import base
-from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
 
-CONF = config.CONF
-
 
 class RolesV3TestJSON(base.BaseIdentityV3AdminTest):
 
diff --git a/tempest/api/identity/v3/test_application_credentials.py b/tempest/api/identity/v3/test_application_credentials.py
index caf0b1e..1cee902 100644
--- a/tempest/api/identity/v3/test_application_credentials.py
+++ b/tempest/api/identity/v3/test_application_credentials.py
@@ -19,13 +19,9 @@
 from oslo_utils import timeutils
 
 from tempest.api.identity import base
-from tempest import config
 from tempest.lib import decorators
 
 
-CONF = config.CONF
-
-
 class ApplicationCredentialsV3Test(base.BaseApplicationCredentialsV3Test):
 
     def _list_app_creds(self, name=None):
diff --git a/tempest/api/network/admin/test_l3_agent_scheduler.py b/tempest/api/network/admin/test_l3_agent_scheduler.py
index 206d867..033bf55 100644
--- a/tempest/api/network/admin/test_l3_agent_scheduler.py
+++ b/tempest/api/network/admin/test_l3_agent_scheduler.py
@@ -14,11 +14,9 @@
 
 from tempest.api.network import base
 from tempest.common import utils
-from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions
 
-CONF = config.CONF
 AGENT_TYPE = 'L3 agent'
 AGENT_MODES = (
     'legacy',
diff --git a/tempest/api/network/admin/test_ports.py b/tempest/api/network/admin/test_ports.py
index 483b405..05363db 100644
--- a/tempest/api/network/admin/test_ports.py
+++ b/tempest/api/network/admin/test_ports.py
@@ -14,11 +14,8 @@
 #    under the License.
 
 from tempest.api.network import base
-from tempest import config
 from tempest.lib import decorators
 
-CONF = config.CONF
-
 
 class PortsAdminExtendedAttrsTestJSON(base.BaseAdminNetworkTest):
 
diff --git a/tempest/api/network/test_allowed_address_pair.py b/tempest/api/network/test_allowed_address_pair.py
index 3075047..dec3413 100644
--- a/tempest/api/network/test_allowed_address_pair.py
+++ b/tempest/api/network/test_allowed_address_pair.py
@@ -17,11 +17,8 @@
 
 from tempest.api.network import base
 from tempest.common import utils
-from tempest import config
 from tempest.lib import decorators
 
-CONF = config.CONF
-
 
 class AllowedAddressPairTestJSON(base.BaseNetworkTest):
     """Tests the Neutron Allowed Address Pair API extension
diff --git a/tempest/api/network/test_ports.py b/tempest/api/network/test_ports.py
index 246a5c3..2c9159c 100644
--- a/tempest/api/network/test_ports.py
+++ b/tempest/api/network/test_ports.py
@@ -22,13 +22,10 @@
 from tempest.api.network import base_security_groups as sec_base
 from tempest.common import custom_matchers
 from tempest.common import utils
-from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
 
-CONF = config.CONF
-
 
 class PortsTestJSON(sec_base.BaseSecGroupTest):
     """Test the following operations for ports:
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index ddd7d3a..0b61860 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -15,13 +15,10 @@
 
 from tempest.api.network import base
 from tempest.common import utils
-from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
 
-CONF = config.CONF
-
 
 class RoutersNegativeTest(base.BaseNetworkTest):
 
diff --git a/tempest/api/network/test_security_groups.py b/tempest/api/network/test_security_groups.py
index 24bd8ea..ffc1fca 100644
--- a/tempest/api/network/test_security_groups.py
+++ b/tempest/api/network/test_security_groups.py
@@ -15,12 +15,9 @@
 
 from tempest.api.network import base_security_groups as base
 from tempest.common import utils
-from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
-CONF = config.CONF
-
 
 class SecGroupTest(base.BaseSecGroupTest):
 
diff --git a/tempest/cmd/run.py b/tempest/cmd/run.py
index a27425c..84c6d9a 100644
--- a/tempest/cmd/run.py
+++ b/tempest/cmd/run.py
@@ -160,8 +160,6 @@
             sys.exit(2)
         if parsed_args.state:
             self._init_state()
-        else:
-            pass
 
         regex = self._build_regex(parsed_args)
         return_code = 0