Slurm20cicd

this branch is introducing some breaking slurm20 changes which are compatile with monarch at this point in time but not M3

The other purpose is to bring back the CICD pipeline to a green status to allow for ubuntu related commits to be properly checked.

I had to revert some dummy ldap passwords to redhat

The changes in roles/slurm-start/tasks/main.yml are very spagetti. The core problem is that we have one role for slurm controllers and clients and also that we want the CICD pipeline to start everything automagically and he live systems to be only started manually