Versions that has branched out from Rawhide but are still not released
still have many changes that breaks the CI.
As we want the CI to be more stable for Tier 1, which runs for every MR,
do not make the switch as soon as Rawhide has branched, but when we choose so.
Add option --all to distros_support.py to show all the NM versions that
are being actively used by any active distro. This will be useful to
decide what stable branches are we interested into actively backporting
fixes and which ones we're not.
Passing a version number of NetworkManager to this new script, it prints
what distros are using that NM version and generates a new content for
.gitlab-ci/config.yml.
Automatically generating the config.yml content is useful because we can
easily update what distros we test in the CI and the Tier that they
belong, depending on what version of NM do they ship and whether they
have reached EOL or not.
Important: when generating a config.yml for an stable branch, not for
main, it must be generated from main. This is because we are not going
to keep distros-info.yml up to date in all branches, only in main.
