[cern] enable cvmfs in swarm mode
setup docker-volume-cvmfs in all nodes, including the master nodes. swarm mode schedules services and containers in any of the manager or workers, so we should enable it everywhere.
Closes #4411
setup docker-volume-cvmfs in all nodes, including the master nodes. swarm mode schedules services and containers in any of the manager or workers, so we should enable it everywhere.
Closes #4411