Just in case you didn't see or hear about it.  TripleO is removing all the py27 tox tests [1].  See the bug for details why.  We really need to get CentOS-8 jobs in place ASAP for ussuri and train, that will continue to be the upstream CI teams focus until it's done.

Thank you

[1] https://review.opendev.org/#/q/topic:1861803+(status:open+OR+status:merged)