Create symbolic links for slurm.conf, gres.conf, slurmdbd.conf, cgroup.conf on virtual login node in staging

We don't have a symlink in the staging environment like in prod for slurm.conf, gres.conf, slurmdbd.conf, cgroup.conf files in the /etc/slurm dir. This will cause issues while running slurm jobs on the virtual login node.

Create the following symlinks via the slurm_client ansible role - ansible/roles/slurm_client/tasks/main.yml

cgroup.conf -> /cm/shared/apps/slurm/var/etc/cgroup.conf
gres.conf -> /cm/shared/apps/slurm/var/etc/gres.conf
slurm.conf -> /cm/shared/apps/slurm/var/etc/slurm.conf
slurmdbd.conf -> /cm/shared/apps/slurm/var/etc/slurmdbd.conf