Permit haproxy backend traffic, test all services are up on both controllers
Fix iptables syntax
Use awk rather than shell script for grep with reversed exit code
Cleanup horizon role
Avoid matching colon to prevent YAML syntax error
Merge pull request #260 from blueboxgroup/horizon-cleanup

Horizon cleanup
Merge remote-tracking branch 'upstream/master' into ufw

Conflicts:
	playbooks/tests/tasks/controller.yml
	roles/controller/templates/etc/network/iptables-firewall