CBQE-0: import ClusterStatus

Change-Id: Ia4965f9a0bd283f7cd8dbe6bd706cbba5b867f93
Reviewed-on: http://review.couchbase.org/26272
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
Tested-by: Tommie McAfee <tommie@couchbase.com>