Because of the bug in upstream, network-config v2 data is not represented properly and our module cc_vyos.py cannot use it.
In sagitta we already have a workaround that fixes this, so we need to backport it to equuleus.
After this, our module will be able to use both v1 and v2 again. Cloud-init will still show the error message with RuntimeError: Unknown network config version: None, but this does not affect VyOS anyhow.