CBQE-0: Increase wait after XDCR for traiging

Change-Id: I7d80a9dbeb0306ad142325a2805caccec221fbb7
Reviewed-on: http://review.couchbase.org/30761
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>