Use oslo-common's logging fixture
Use oslo-common's logging fixture

Make the unit tests raise an exception when there is a logging
formatting issue. Related to oslo BP
logging-handleerror-raise-exception

Change-Id: Id4aa4277c387f1b67db4209d467c570b3c630f29

citrix-openstack-build/oslo.versionedobjects,openstack/oslo.versionedobjects