Set strategy planner

The default planner can not create actions with right order,
The node_resouce_consolidation strategy needs to use its
own planner.
Partially Implements: blueprint node-resource-consolidation
Depends-on: I586e67f782e2965234826634ba3ff51681af4df8
Change-Id: I05b02905a3335a73b6926966de6331c632842293

watcher/decision_engine/strategy/strategies/node_resource_consolidation.py

@@ -250,7 +250,8 @@ class NodeResourceConsolidation(base.ServerConsolidationBaseStrategy):
 
     def pre_execute(self):
         self._pre_execute()
-        self.host_choice = self.input_parameters.host_choice
+        self.host_choice = self.input_parameters.get('host_choice', 'auto')
+        self.planner = 'node_resource_consolidation'
 
     def do_execute(self, audit=None):
         """Strategy execution phase