The preset for systemd-networkd-wait-online.service should match
whatever we do for systemd-networkd.service. s-n-wait-online.service
is only pulled in when some other unit pulls in network-online.target,
otherwise it's not used. But if something pulls in network-online.target,
they should expect s-n-wait-online.service to be active iff
systemd-networkd.service is active.
OTOH, the journal-remote and journal-upload services should be disabled
by default, since they don't do anything without additional configuration.
This is useful so that distros have something to base their own policy
of. It also useful to make sure that minimal installs always get useful
configuration in place.