Add heat stack action test case

Ensure heat action-suspend and action-resume can work
well, so add these cases.

Change-Id: I6ec1b82f1e138ea56d6a8e7cf78d1f9a12a96f2d
diff --git a/tempest/api/orchestration/stacks/test_non_empty_stack.py b/tempest/api/orchestration/stacks/test_non_empty_stack.py
index eead234..282758c 100644
--- a/tempest/api/orchestration/stacks/test_non_empty_stack.py
+++ b/tempest/api/orchestration/stacks/test_non_empty_stack.py
@@ -112,6 +112,18 @@
         self.assertEqual('fluffy', stack['outputs'][0]['output_key'])
 
     @attr(type='gate')
+    def test_suspend_resume_stack(self):
+        """suspend and resume a stack."""
+        resp, suspend_stack = self.client.suspend_stack(self.stack_identifier)
+        self.assertEqual('200', resp['status'])
+        self.client.wait_for_stack_status(self.stack_identifier,
+                                          'SUSPEND_COMPLETE')
+        resp, resume_stack = self.client.resume_stack(self.stack_identifier)
+        self.assertEqual('200', resp['status'])
+        self.client.wait_for_stack_status(self.stack_identifier,
+                                          'RESUME_COMPLETE')
+
+    @attr(type='gate')
     def test_list_resources(self):
         """Getting list of created resources for the stack should be possible.
         """
diff --git a/tempest/services/orchestration/json/orchestration_client.py b/tempest/services/orchestration/json/orchestration_client.py
index e896e0d..d5ae828 100644
--- a/tempest/services/orchestration/json/orchestration_client.py
+++ b/tempest/services/orchestration/json/orchestration_client.py
@@ -102,6 +102,20 @@
         body = json.loads(body)
         return resp, body['stack']
 
+    def suspend_stack(self, stack_identifier):
+        """Suspend a stack."""
+        url = 'stacks/%s/actions' % stack_identifier
+        body = {'suspend': None}
+        resp, body = self.post(url, json.dumps(body), self.headers)
+        return resp, body
+
+    def resume_stack(self, stack_identifier):
+        """Resume a stack."""
+        url = 'stacks/%s/actions' % stack_identifier
+        body = {'resume': None}
+        resp, body = self.post(url, json.dumps(body), self.headers)
+        return resp, body
+
     def list_resources(self, stack_identifier):
         """Returns the details of a single resource."""
         url = "stacks/%s/resources" % stack_identifier