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/scenario/test_aggregates_basic_ops.py b/tempest/scenario/test_aggregates_basic_ops.py
index 4074e9b..92e6c74 100644
--- a/tempest/scenario/test_aggregates_basic_ops.py
+++ b/tempest/scenario/test_aggregates_basic_ops.py
@@ -13,10 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from oslo_log import log as logging
 from tempest_lib.common.utils import data_utils
 
 from tempest.common import tempest_fixtures as fixtures
-from tempest.openstack.common import log as logging
 from tempest.scenario import manager
 from tempest import test