[tripleo] rocky builds

Greetings, I've confirmed that builds from the Rocky release will no longer be imported. Looking for input from the upstream folks with regards to maintaining the Rocky release for upstream. Can you please comment if you have any requirement to continue building, patching Rocky as I know there are active reviews [1]. I've added this topic to be discussed at the next meeting [2] Thank you! [1] https://review.opendev.org/#/q/status:open+tripleo+branch:stable/rocky [2] https://etherpad.openstack.org/p/tripleo-meeting-items