dnf-automatic: disable the makecache timer, not the service
Service can be unmasked, as long as nobody triggers it. If we do it the
other way arount, we see this every-time we log-in on F33+:
Last login: Fri Nov 13 09:15:56 2020 from 193.165.237.101
[systemd]
Failed Units: 1
dnf-makecache.timer
Which is:
systemctl status dnf-makecache.timer
...
...: dnf-makecache.timer: Failed to queue unit startup job: Unit dnf-makecache.service is masked.
...: dnf-makecache.timer: Failed with result 'resources'.