action #38807

Updated by SLindoMansilla about 3 years ago

## Motivation
We use the medium "iso/SLE-12-SP4-Server-DVD-x86_64-Build????-Media2.iso" while implicitly by extracting it and using it as repo.
We thought
the repo (I think this is how it works) however we used that ISO need to extract account for the repository, but medium, see #38804. But as the ISO and the repository are synced and handle into OSD in different tasks, so is not actually used we don't need to sync nor have should either create a dummy job setting with those unused isos.

"using" the ISO or we need to account for delete the medium (so it will get deleted by openqa-gru.service), see #38804 for fix to medium2.
There are still some other ISOs for modules that need to be checked.
ISO after extracting the repo

## Acceptance criteria
* **AC1:** All synced assets are accounted for in test asset variables but unused assets are not provided as assets on jobs that users want to clone

## Further details
Our current s390x jobs reference an ISO as well but we never use the ISO directly but only repos from that. These jobs should also be handled