feat: continue incus implementation (#245)

- migrate to systemd-networkd
- setup dummy, bridge and static/ethernet interfaces
- manage sshd.service droping to start ssh after networking is online
- enable ip forewarding
- add fastpool/data/incus dataset
- enable ospf and frr
- add loopback0 as ssh listenaddress
- add loopback1/2 for ceph cluster/public traffic

Reviewed-on: https://git.query.consul/unkinben/puppet-prod/pulls/245

modules/networking/templates/bridge.netdev.erb

@@ -0,0 +1,3 @@
+[NetDev]
+Name=<%= @title %>
+Kind=bridge