action #151331

Updated by okurz 8 months ago

## Motivation 
 Same as in #127523 now also for s390-zVM there is only a generic s390x-zVM s390-zVM worker class and no other variants for that. 

 ## Acceptance criteria 
 * **AC1:** All s390x z/VM tests use an openQA "machine definition" that uses the generic "s390x-zVM" "s390-zVM" worker class 
 * **AC2:** Current OSD openQA s390-zVM workers all have the generic class "s390x-zVM" "s390-zVM" 

 ## Suggestions 
 * Read #127523 
 * Verify common openQA tests can work on "s390x-zVM" "s390-zVM" worker class 
 * Use "s390x-zVM" "s390-zVM" in production job templates 
 * Remove "s390x-zVM-vswitch-l2" and other potential variants from