[BUG] Need to run systemctl daemon-reload after modifying /etc/fstab

[gwolski]

The config/ansible/playbooks/roles/ParallelClusterExternalLoginNodeDeconfigure/tasks/main.yml removes the cluster mount from /etc/fstab:

- name: Remove /opt/slurm/{{ cluster_name }} from /etc/fstab
  mount:
    path: /opt/slurm/{{ cluster_name }}
    backup: true
    fstype: nfs
    state: absent

but it fails to run a

systemctl daemon-reload

And on my Rocky 8.10 systems I then end up with warnings in /var/log/messages:

Dec  6 08:19:35 hostname kernel: nfs: server head_node.<clustername>.pcluster not responding, timed out

A quick grep suggest other playbooks might be affected:

./roles/ExostellarComputeNodeAmi/tasks/main.yml
./roles/ParallelClusterCreateUsersGroupsJsonConfigure/tasks/main.yml
./roles/ParallelClusterCreateUsersGroupsJsonConfigure/README.md
./roles/ParallelClusterCreateUsersGroupsJsonDeconfigure/tasks/main.yml
./roles/ParallelClusterCreateUsersGroupsJsonDeconfigure/README.md
./roles/ParallelClusterExternalLoginNodeConfigure/tasks/main.yml
./roles/ParallelClusterExternalLoginNodeDeconfigure/tasks/main.yml