MB-18129: re-enable FTS usage of cbauth, due to RBAC
MB-18129: re-enable FTS usage of cbauth, due to RBAC

This reverts commit 4705cebe4a9ecf876566ccc5aacb7dce574a8424.

Change-Id: If0a733edc5e08b5ddf0f0951496bdceb255d7cea
Reviewed-on: http://review.couchbase.org/60292
Tested-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>
Reviewed-by: Marty Schoch <ba9951d7d66412e2a57aea395f01176a793cf5eb@gmail.com>

membase/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server