Hello Ironicers o/

I would like to gather some feedback before moving forward with the oficial request to close some branches.

1) Closing some bugfix branches

I would like to check if we are ok with closing all other bugfix branches except for:

ironic: bugfix/20.2 | bugfix/19.0 | bugfix/18.1

ironic-python-agent: bugfix/8.6 | bugfix/8.3 | bugfix/8.1

ironic-inspector: bugfix/10.12 | bugfix/10.9 | bugfix/10.7

These are the branches I know people use, but it's good to double check before removing all other bugfix/*.

The reason to close is because it became a bit more complicated to maintain CI working properly in those branches, so if we don't have people using and looking at backports and making CI work I think we can close them.

2) Closing all stable branches pre-train.

Thanks!

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