The systemd socket unit files now more precisely track the IPFS
configuration, by including any multaddr they can make a `ListenStream`
for. (The daemon doesn't currently support anything which would use
`ListDatagram`, so we don't need to worry about that.)
The tests use some of these features.
$getter can be used once ipfs supports private/local networks
and or internet gets routed to the VMs
Signed-off-by: Maximilian Güntner <code@klandest.in>