Add hacking checks to watcher

The hacking checks enforce during the pep8 run functional validations of
the code to ensure deeper filters and code consistency.  This change set
adds the hacking checks to the wathcer project.  These checks were
seeded from the neutron project, which had a good set of base defaults.

This change set also updates the watcher project to be compliant with
these new hacking checks.

Change-Id: I6f4566d384a7400bddf228aa127a53e6ecc82c2e

watcher/decision_engine/model/mapping.py

@@ -13,9 +13,12 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 from oslo_log import log
 import threading
 
+from watcher._i18n import _LW
+
 LOG = log.getLogger(__name__)
 
 
@@ -72,10 +75,10 @@ class Mapping(object):
                 # remove vm
                 self.mapping_vm.pop(vm_uuid)
             else:
-                LOG.warning(
-                    "trying to delete the virtual machine {0}  but it was not "
-                    "found on hypervisor {1}".format(
-                        vm_uuid, node_uuid))
+                LOG.warning(_LW(
+                    "trying to delete the virtual machine %(vm)s but it was "
+                    "not found on hypervisor %(hyp)s"),
+                    {'vm': vm_uuid, 'hyp': node_uuid})
         finally:
             self.lock.release()