Add test case for tenant_safe in cluster_list
Add test case for tenant_safe in cluster_list

Change-Id: Ic7d23a021d60bae29567b5cb146b673699f29b3b

Alzon/senlin,Alzon/senlin,tengqm/senlin-container,stackforge/senlin,openstack/senlin,openstack/senlin,stackforge/senlin,tengqm/senlin-container,openstack/senlin