MB-100: update toybuild manifest to inlcude CBSASL fix

Change-Id: Ic31a2b868e9737cc44b207f028df369754231409
Reviewed-on: http://review.couchbase.org/28769
Reviewed-by: Junyi Xie <junyi.couchbase@gmail.com>
Tested-by: Junyi Xie <junyi.couchbase@gmail.com>