Ceph » Orchestrator

based on #26684

Add generic CLI commands to turn device lights on and off.

These will call out to the orchestrator, once it has the appropriate hook
implemented, which will in turn call out to salt or rook or ssh or whatever
to actually turn a light on or off.

Possible improvements:

Provide a way to enable lights per OSD. aka
ceph osd {ident,fault}-off {primary,journal,db,wal,all} osd.124
Make is possible to enable lights on devices unknown to ceph. Remove self.get('devices')
But these improvements don't have any effect on the orchestrator interface method.