[Merge] ~paelzer/ubuntu-seeds/+git/ubuntu:demote-vlan-focal into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:focal

[Christian Ehrhardt ]

This also needs a change in nova to be fully "unseedable", you can see the bug for more details on that.
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https://code.launchpad.net/~paelzer/ubuntu-seeds/+git/ubuntu/+merge/376746
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~paelzer/ubuntu-seeds/+git/ubuntu:demote-vlan-focal into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:focal.