We need to release 15.5.0 instead of 15.4.0 for Train because we had broken code in that release since Designate has removed the pool-manager [1]. We fixed our testing in [2] and deprecated that code and added a release note in [3]. See the release patch that updates the metadata [4] which holds the complete patch chain. [1] https://docs.openstack.org/releasenotes/designate/train.html [2] https://review.opendev.org/#/c/687247/ [3] https://review.opendev.org/#/c/687333/ [4] https://review.opendev.org/#/c/687334 Depends-On: https://review.opendev.org/#/c/687334 Change-Id: I72ddf92837bfd99beb4279afabf57bb84c7792fe