MB-100: added reb out dgm case

Change-Id: I9c6263057bfe1045e3209113ca6ba1b3b72f72f2
Reviewed-on: http://review.couchbase.org/27785
Reviewed-by: Ronnie Sun <ronnie@couchbase.com>
Tested-by: Ronnie Sun <ronnie@couchbase.com>