Revised cluster_delete implementation
Revised cluster_delete implementation

We expect something returned from the engine, or else we throw a 500
exception. On correct execution, we return a NoContent exception that
will be handled as the right result.

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