Added a test for stop and start a server

Here a test added for stop
and start a server.

Change-Id: I5d036d69290583e80b346481263e44a56a419e7b
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 66d8264..893d9e0 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -279,6 +279,15 @@
         cls.server_id = server['id']
         cls.password = server['adminPass']
 
+    @attr(type='gate')
+    def test_stop_start_server(self):
+        resp, server = self.servers_client.stop(self.server_id)
+        self.assertEqual(202, resp.status)
+        self.servers_client.wait_for_server_status(self.server_id, 'SHUTOFF')
+        resp, server = self.servers_client.start(self.server_id)
+        self.assertEqual(202, resp.status)
+        self.servers_client.wait_for_server_status(self.server_id, 'ACTIVE')
+
 
 class ServerActionsTestXML(ServerActionsTestJSON):
     _interface = 'xml'