Move Audit-template management in DefaultStrategyContext

This aim of this patchset is to move the management of the
Audit-Template into StrategyContext
in order to prepare to pass parameters to strategies
but also to prepare to add more dynamic Actions management

Partially implements: blueprint glossary-related-refactoring

Change-Id: I13ee063da947113ce349855aa331a22f40567051

watcher/decision_engine/messaging/audit_endpoint.py

@@ -21,8 +21,6 @@ from concurrent.futures import ThreadPoolExecutor
 from oslo_log import log
 
 from watcher.decision_engine.audit.default import DefaultAuditHandler
-from watcher.metrics_engine.cluster_model_collector.manager import \
-    CollectorManager
 
 LOG = log.getLogger(__name__)
 
@@ -30,13 +28,8 @@ LOG = log.getLogger(__name__)
 class AuditEndpoint(object):
     def __init__(self, messaging, max_workers):
         self._messaging = messaging
-        self._collector_manager = CollectorManager()
         self._executor = ThreadPoolExecutor(max_workers=max_workers)
 
-    @property
-    def collector_manager(self):
-        return self._collector_manager
-
     @property
     def executor(self):
         return self._executor
@@ -46,9 +39,7 @@ class AuditEndpoint(object):
         return self._messaging
 
     def do_trigger_audit(self, context, audit_uuid):
-        model_collector = self.collector_manager.get_cluster_model_collector()
-
-        audit = DefaultAuditHandler(self.messaging, model_collector)
+        audit = DefaultAuditHandler(self.messaging)
         audit.execute(audit_uuid, context)
 
     def trigger_audit(self, context, audit_uuid):