Support multiple messages from deploy_plan

This updates the workflow wrapper to use the multiple message interface.

Change-Id: I09b4cbfb32fca59c4b055a61f20c33f2c893c96b
Partial-Bug: #1646887

tripleoclient/tests/v1/test_overcloud_plan.py

@@ -340,9 +340,10 @@ class TestOvercloudDeployPlan(utils.TestCommand):
         # No existing stack, this is a new deploy.
         self.orch.stacks.get.return_value = None
 
-        self.websocket.wait_for_message.return_value = {
+        self.websocket.wait_for_messages.return_value = iter([{
+            'execution': {'id': 'IDID'},
             'status': 'SUCCESS'
-        }
+        }])
 
         mock_for_stack_ready.return_value = True
 

tripleoclient/workflows/deployment.py

@@ -40,8 +40,9 @@ def deploy(clients, **workflow_input):
         # The deploy workflow ends once the Heat create/update starts. This
         # means that is shouldn't take very long. Wait for six minutes for
         # messages from the workflow.
-        message = ws.wait_for_message(execution.id, 360)  # 6 * 60 seconds
-        assert message['status'] == "SUCCESS", pprint.pformat(message)
+        for payload in base.wait_for_messages(workflow_client, ws, execution,
+                                              360):
+            assert payload['status'] == "SUCCESS", pprint.pformat(payload)
 
 
 def deploy_and_wait(log, clients, stack, plan_name, verbose_level,