Update hacking version to latest

Use latest release 1.1.0 and compatible changes w.r.t pep8

Change-Id: I7d0661b59684271d08e240299a2a23a6d16da95d

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
+hacking>=1.1.0,<1.2.0 # Apache-2.0
 
 coverage>=3.6
 python-subunit>=0.0.18

vitrage_dashboard/api/vitrage.py

@@ -12,6 +12,16 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
+import json
+import logging
+import tempfile
+
+from horizon.utils.memoized import memoized
+from keystoneauth1.identity.generic.token import Token
+from keystoneauth1.session import Session
+from openstack_dashboard.api import base
+from vitrageclient import client as vitrage_client
+
 """
 https://docs.openstack.org/horizon/latest/contributor/tutorials/plugin.html
 """
@@ -22,15 +32,6 @@ https://docs.openstack.org/horizon/latest/contributor/tutorials/plugin.html
     While interactions with the service can be handled in the views.py,
     isolating the logic is an established pattern in Horizon.
 """
-from horizon.utils.memoized import memoized  # noqa
-import json
-from keystoneauth1.identity.generic.token import Token
-from keystoneauth1.session import Session
-from openstack_dashboard.api import base
-import tempfile
-from vitrageclient import client as vitrage_client
-
-import logging
 LOG = logging.getLogger(__name__)