(legacy) remove utils.inc, move shared functions into services.inc and single used functions into respective location.

While there, move the IPv4 sibling and add a require for the remaining
outside caller.

Only a workaround.  Need to take this to FreeBSD.

The default is to reboot anyway.  For everybody importing a backup
that has interface mismatches this means the backup did not come
from the same system, so it must be adapted on the console instead.

Caused by:	Omitted /var/run boot up purge