ICSHWI-9541: Mount: absent might not unmount share

It won't unmount FS if the mount point is not specified in fstab There is a special case when this can be a problem: if during undeployment absent removes entry from fstab then tries to unmount the share but fails for some reason. The next time undeployment runs mount==absent will do nothing and the next task (that tries to delete the local nonvolatile directory) will reproducibly fail with permission denied.

https://github.com/ansible-collections/ansible.posix/issues/322