Added the cluster enumerate client interface and CLI
Added the cluster enumerate client interface and CLI

phoenix-io/openstorage,libopenstorage/openstorage,libopenstorage/openstorage,pault84/openstorage,ModelRocket/openstorage,libopenstorage/openstorage,ModelRocket/openstorage,kunalkushwaha/openstorage,jvinod/ost,pault84/openstorage,pault84/openstorage