Add Fencing support

Using deface gem to override Foreman views.
Add attributes to whitelist for Safemode::Jail
Show expose lanplus as a boolean
support for additional ceph params
Remove LVM from cinder backend choices when deployment is HA

This will remove the LVM choice from cinder backends if the deployment
is an HA deployment.
Merge pull request #295 from ifarkas/fencing

Add fencing support
Merge pull request #300 from bcrochet/remove-lvm

Remove LVM from cinder backend choices when deployment is HA
Merge pull request #299 from sseago/new-ceph-params

support for additional ceph params
version bump