CBQE-0: Added xdcr CLI test for diffrent replicaiton mode

Change-Id: I8934ab86d3b686c3c51fe17f3aecee894c9cab78
Reviewed-on: http://review.couchbase.org/33317
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>