Update all Oslo module use

Use graduated libraries where available and update the incubated modules
that remain.

Update imports for libraries that were being used already to avoid the
'oslo' namespace package.

Update config file for creating example configuration files and provide
a new sample file based on the options defined in the libraries.

Note: because of the number of libraries involved there is no real way
to break this change up into smaller pieces. Fortunately, most of the
changes are just to import statements.

Change-Id: Ia0de957b681cb924a57af98d99a9389ee234ed5b
diff --git a/tempest/stress/driver.py b/tempest/stress/driver.py
index e007a49..d095b53 100644
--- a/tempest/stress/driver.py
+++ b/tempest/stress/driver.py
@@ -17,6 +17,8 @@
 import signal
 import time
 
+from oslo_log import log as logging
+from oslo_utils import importutils
 from six import moves
 from tempest_lib.common.utils import data_utils
 
@@ -25,8 +27,6 @@
 from tempest.common import ssh
 from tempest import config
 from tempest import exceptions
-from tempest.openstack.common import importutils
-from tempest.openstack.common import log as logging
 from tempest.stress import cleanup
 
 CONF = config.CONF