Since commit d61eaf2545 ("service: don't
install dependency for "NetworkManager-wait-online.service" to
"network-online.target.wants") we no longer install NM-w-o.service
in "network-online.target.wants" directory.
Obviously, for previous RPM versions NM-w-o.service was always enabled.
For current versions, it depends now on the preset. Most importantly,
this allows the user to disable the service, without masking it.
Previously NM-w-o.service was always implicitly enabled.
But presets are not applied during package upgrade, so it means that
after upgrade the service will be disabled. Hack around that via an RPM
scriptlet.
https://bugzilla.redhat.com/show_bug.cgi?id=1455704
513d0c2286