flake8: Specify 'nova' as name of app

Specify 'nova' as the name of the application for the flake8-import-order
plugin. That way it knows that imports of nova should come after external
libraries.

Fix issues discovered in ordering by this new check.

Change-Id: I822796ba3d750f93de813035aeee59e8ccb022a2

nova/api/openstack/placement/wsgi.py

@@ -18,12 +18,12 @@ import logging as py_logging
 import os
 import os.path
 
+from oslo_log import log as logging
+
 from nova.api.openstack.placement import deploy
 from nova import conf
 from nova import config
 
-from oslo_log import log as logging
-
 CONFIG_FILE = 'nova.conf'
 
 

nova/conf/database.py

@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from nova.conf import paths
-
 from oslo_config import cfg
 from oslo_db import options as oslo_db_options
 
+from nova.conf import paths
+
 _DEFAULT_SQL_CONNECTION = 'sqlite:///' + paths.state_path_def('nova.sqlite')
 
 

tox.ini

@@ -160,6 +160,7 @@ enable-extensions = H106,H203,H904
 ignore = E121,E122,E123,E124,E125,E126,E127,E128,E129,E131,E251,H405
 exclude =  .venv,.git,.tox,dist,doc,*lib/python*,*egg,build,tools/xenserver*,releasenotes
 import-order-style = pep8
+application-import-names = nova
 # To get a list of functions that are more complex than 25, set max-complexity
 # to 25 and run 'tox -epep8'.
 # 34 is currently the most complex thing we have