CBQE-0: changes in create replication due to interface change on ns_server

Change-Id: Ie436be94644658df876db527c3ef4dd20760d2c4
Reviewed-on: http://review.couchbase.org/32283
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>