Use UFW to manage iptables
Merge remote-tracking branch 'upstream/master' into ufw

Conflicts:
	playbooks/tests/tasks/controller.yml
	roles/controller/templates/etc/network/iptables-firewall
Merge remote-tracking branch 'upstream/master' into ufw
Move firewall changes for each role into their respective tasks
Merge pull request #255 from blueboxgroup/ufw

Use UFW to manage iptables