[arch-devops] Host-based Firewalls (Task #61)

​Hi all, I've spent a couple of hours looking in to task #61 ("Set up firewall")​. It should be pretty straight-forward. I've reviewed each of the Hetzner hosts for the ports they are listening on vs what should be publicly accessible. I have a diff against the current ansible roles if someone would like to review and give me their thoughts? Cheers, ~p