CBQE-0: fix potential issue of verify rev-id, previous code gets the buckets from rest, which return 0 size KvStore object
        reverting old commit  http://review.couchbase.org/#/c/21104/

Change-Id: I71eaa5c56c530696a6d28c7635519af0f250efff
Reviewed-on: http://review.couchbase.org/35892
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>