MB-100: unbreak sending output of xdcr settings

Change-Id: I9d4e8c882e1807bebcb96ae3ec069180f82be6c7
Reviewed-on: http://review.couchbase.org/29312
Reviewed-by: Artem Stemkovski <artem@couchbase.com>
Tested-by: Artem Stemkovski <artem@couchbase.com>