Changed to only iptables, no firewalld, NetworkManager
Merge branch 'feature/theforeman' of github.com:jameskyle/occam into feature/theforeman

* 'feature/theforeman' of github.com:jameskyle/occam:
  Disable NetworkManager

Conflicts:
	bootstrap/handlers/main.yml
	bootstrap/tasks/networking.yml
	bootstrap/templates/ifcfg-mgmt