MB-100: fix toybuilder for pause_resum_xdcr

Change-Id: I19d0037e6f2737477a0f863ac6444dc0c40ddb6f
Reviewed-on: http://review.couchbase.org/29129
Reviewed-by: Junyi Xie <junyi.couchbase@gmail.com>
Tested-by: Junyi Xie <junyi.couchbase@gmail.com>