Enable H305 and H307 style checks

Correct grouping and ordering of imports

Change-Id: I47ea0d53f80d7f0aeb01c1c6afd63713be87ddf4
diff --git a/functional/test_resource_group.py b/functional/test_resource_group.py
index 8ccddd8..6c68a19 100644
--- a/functional/test_resource_group.py
+++ b/functional/test_resource_group.py
@@ -10,9 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
-
 from heatclient import exc
+import six
 
 from heat_integrationtests.common import test