Better cleanup for Tempest tests

When running our Tempest tests, we are now cleaning up all the
objects we have created within the WatcherDB via a soft_delete.

Partially Implements: blueprint deletion-of-actions-plan

Change-Id: Ibdcfd2be37094377d09ad77d5c20298ee2baa4d0

watcher_tempest_plugin/tests/scenario/test_execute_basic_optim.py

@@ -117,7 +117,8 @@ class TestExecuteBasicStrategy(base.BaseInfraOptimScenarioTest):
             duration=300,
             sleep_for=2
         ))
-        _, action_plans = self.client.list_action_plan_by_audit(audit['uuid'])
+        _, action_plans = self.client.list_action_plans(
+            audit_uuid=audit['uuid'])
         action_plan = action_plans['action_plans'][0]
 
         _, action_plan = self.client.show_action_plan(action_plan['uuid'])