MB-7250:  sign with provisioning profile:

"3rd Party Mac Developer Application: Couchbase, Inc. (N2Q372V7W2)"

Change-Id: Idb80f4499540462fd29c1ebece71606a999aaadc
Reviewed-on: http://review.couchbase.org/28400
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>