Get rid or re-think use_os_unreleased_updates

[srbarrios]

Some years ago we had the idea to have an IBS project containing multiple unreleased SLE changes. This is a decision made by the whole SUSE company, not just SUMA.
This project is now discontinued from our sumaform side, we still have content in those repos, but sumaform are not updating the injected reports according to the new SLE versions. So, in our test environments, we can't rely on that IBS project.

Example of code not update in the minima.yaml file:

  # SLES 15 SP4 Test (not available until GM)
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Basesystem:/15-SP4:/x86_64/update
  #  archs: [x86_64]
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Containers:/15-SP4:/x86_64/update
  #  archs: [x86_64]
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Desktop-Applications:/15-SP4:/x86_64/update
  #  archs: [x86_64]
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Development-Tools:/15-SP4:/x86_64/update
  #  archs: [x86_64]
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Python2:/15-SP4:/x86_64/update
  #  archs: [x86_64]
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Server-Applications:/15-SP4:/x86_64/update
  #  archs: [x86_64]
  #- url: http://download.suse.de/ibs/SUSE:/Maintenance:/Test:/SLE-Module-Web-Scripting:/15-SP4:/x86_64/update
  #  archs: [x86_64]

• Should we make a cleanup and remove these repos completely from sumaform and so the parameter too?

• Should we work in an update of this part?

• Should we rethink it and do it differently?

[Bischoff]

"Should we make a cleanup and remove these repos completely from sumaform"

from mirror scripts and sumaform yes, probably, I will give it a try

from IBS, no, they seem to be used way beyond the context of SUSE Manager.

[Bischoff]

PRs ready, sent an email, will merge if no opposition by Jan. 20th.

• https://gitlab.suse.de/galaxy/infrastructure/-/merge_requests/672
• Deprecate use_os_unreleased_updates flag #1235

Note to myself: don't forget to clean the mirror afterwards!