firewall: Simple firewall building rules and script
firewall: Adjust template variables.
firewall: Fix modules path

The next major release of puppet will require "modules" to be part of
the path.
firewall: Add dependency to forwarding rule.
firewall: Extend forwarding accept rule filename
Revert "firewall: Add dependency to forwarding rule."

This reverts commit 130be87ccf02f2eefefe6e2429782afcaca21a10.
firewall: Correctly handle icmp6 packages.
firewall: comments
firewall,various: Add allowed ports to firewall
mesh: Add firewall dependency
firewall,vpn: Create firewall rules.
firewall: Basic icmp(v6) forwarding handling.
firewall: Comment, This class will no invoke build-firewall script.

Currently, I see no way to ensure that the build-firewall script will be
executed after all rules are in place.
firewall: More dependencies between resources.
firewall: More readable build-firewall output.
firewall: Fixup class name
bridge: Fixup instance name
alfred: Fixup parameter name
fastd: Fix firewall chain for fastd service.
nrpe: Add service to firewall