feature: Realms become real

Linked to branch of the same name in:
* ironfan_plugins
* ironfan
* enterprise_homebase
* ironfan-enterprise
* ironfan-pantry

Conflicts:
	lib/ironfan/dsl/compute.rb
	lib/ironfan/provider/ec2/security_group.rb

Change-Id: I7c497b0cca95604f2ca7a4236f57dee6e53b5750