add audit parameter to do_execute

The new bp need to get audit type from audit,
so we need to add an audit parameter to do_execute

Partially Implements: blueprint node-resource-consolidation

Change-Id: Ia979781b32202c1821aa1cb91d24253fe6d7bd2d

watcher/decision_engine/strategy/strategies/basic_consolidation.py

@@ -413,7 +413,7 @@ class BasicConsolidation(base.ServerConsolidationBaseStrategy):
             self.aggregation_method['compute_node'] = \
                 self.aggregation_method['node']
 
-    def do_execute(self):
+    def do_execute(self, audit=None):
         unsuccessful_migration = 0
 
         scores = self.compute_score_of_nodes()