[puppet] Broken CI because of missing powertools repo

Hello, Some of you might have noticed this, but currently integration jobs and litmus jobs for puppet projects are failing because of missing powertools repo, which was caused by recent change in delorean-deps.repo provided by RDO (IIUC). I filed a bug[1] to track this issue and submitted a short-term fix which looks promising as per results in CIs. [1] https://bugs.launchpad.net/puppet-openstack-integration/+bug/1907323 [2] https://review.opendev.org/c/openstack/puppet-openstack-integration/+/766213 Please refrain from rechecking any puppet patches (I guess it also affects Victoria and Ussuri), until we land the fix. Thank you for your understanding and patience. Thank you, Takashi Kajinami