fence_scsi: Add support for space-separated devices and update in
meta-data
Currently the devices associated with fence_scsi should be
comma-separated. With this commit, fence_scsi will also work if the
'devices' are space-separated.
Additionally, this commit includes meta-data update:
- For fence_scsi:
- The 'devices' parameter is optional if the cluster is configured with
clvm/lvmlock.
- The 'devices' parameter can be comma or space-separated.
- For fence_mpath:
- The 'devices' parameter can be comma or space-separated.