• resolved: allow defining additional /etc/hosts entries via a credential (it
might make sense to then synthesize a new combined /etc/hosts file in /run
and bind mount it on /etc/hosts for other clients that want to read it.
- Similar, allow picking up DNS server IP addresses from credential.
• repart: allow defining additional partitions via credential
• timesyncd: pick NTP server info from credential
• portabled: read a credential "portable.extra" or so, that takes a list of