team#40971

That needs to be done everywhere.

bash doesn't support `sed < *`, it says "ambiguous redirection". This
is more POSIX-y anyway.

This makes the `net1` network unable to access the public
network. This was probably working before just because all the switch
ports were in the same VLAN. We *thought* `net0` wasn't working, but
that's probably a relic of past failures that were unrelated with
the (current) switch configuration.

lavamind seems to have been able to reach the public network on net0
on dal-node-02 so let's just call it as is and move on.

The rationale here is that when we can do link aggregation this will
provide redundancy between the two NICs on the servers.

Closes: team#41079

See team#40814, team#40482, and team#40815.

TPA-RFC-49: document the ganeti naming convention

See merge request !39

The rationale here is that the proposal is not really relevant once
the original naming convention is fixed. This will be enacted on
monday unless there are any objections.