CBQE:Correct phase in kv+xdcr sys test

Change-Id: Ibaa28eac208c8be6f53027769e0dc47df6cf9af6
Reviewed-on: http://review.couchbase.org/38821
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Reviewed-by: Aruna Piravi <aruna@couchbase.com>
Tested-by: Aruna Piravi <aruna@couchbase.com>