Removed status_topic config parameter

In this changeset, I removed the now obsolete status_topic config
option.

DocImpact
Partially Implements: blueprint watcher-notifications-ovo

Change-Id: Icfc03abd875b77fc456bfa286ac2b5774651e8fa

watcher/common/service_manager.py

@@ -15,9 +15,11 @@
 # under the License.
 
 import abc
+import six
 
 
-class ServiceManagerBase(object):
+@six.add_metaclass(abc.ABCMeta)
+class ServiceManager(object):
 
     @abc.abstractproperty
     def service_name(self):
@@ -35,10 +37,6 @@ class ServiceManagerBase(object):
     def conductor_topic(self):
         raise NotImplementedError()
 
-    @abc.abstractproperty
-    def status_topic(self):
-        raise NotImplementedError()
-
     @abc.abstractproperty
     def notification_topics(self):
         raise NotImplementedError()
@@ -47,10 +45,6 @@ class ServiceManagerBase(object):
     def conductor_endpoints(self):
         raise NotImplementedError()
 
-    @abc.abstractproperty
-    def status_endpoints(self):
-        raise NotImplementedError()
-
     @abc.abstractproperty
     def notification_endpoints(self):
         raise NotImplementedError()