Add ceph-calamari role for deploying Calamari

Signed-off-by: Tim Serong <tserong@suse.com>
Not sure it matters much, but I'd rewrite this to:
```ruby
unless node.get_network_by_type(t)
  node.crowbar["crowbar"]["links"].delete("Calamari Dashboard (#{t})")
  next
end
```