MB-12274: Use released/2.5.1.1.xml as basis (only affects couchdbx-app)

Change-Id: I2e68f2f5199fbc4d310264fae3ed1ae310d7e393
Reviewed-on: http://review.couchbase.org/43345
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>