Hello,
I'm sending this as an early announcement of my current plan about these old stable branches in Puppet OpenStack project.
Because we've not see any interest to backport changes to these stable branches and we have limited capacity to maintain our project, I'd propose transitioning EOL these old stable branches by the following steps.
* stable/yoga is transitioned to unmaintained/yoga but we may not work on maintaining it now (which eventually means it's abandoned right after its transition to unmaintained status). We'll move it to EOL at the next cadence, when zed is transitioned to unmaintained).
* wallaby and xena will become immediate candidates for EOL so we'll just move the EOL process forward.
If you have any concern, then please let me know. We'll formally work on these processes in the release patches.
[1] https://docs.openstack.org/project-team-guide/stable-branches.html#unmaintai...