Update to toybuilder:couchstore's manifest

Change-Id: Ief8682bd43cedffe332e57b72ba9132fc19dd846
Reviewed-on: http://review.couchbase.org/35565
Reviewed-by: abhinav dangeti <abhinav@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>