systemd-time-wait-sync.service should be part of systemd-timesyncd package

[Dan Streetman]

[impact]

systemd-time-wait-sync service never completes when systemd-timesyncd package is not installed

[test case]

remove the systemd-timesyncd package and enable the systemd-time-wait-sync service, and reboot. Check status of the service to see it's stuck in 'activating' state, e.g.:

ubuntu@lp1937238-f:~$ sudo systemctl status systemd-time-wait-sync.service
● systemd-time-wait-sync.service - Wait Until Kernel Time Synchronized
     Loaded: loaded (/lib/systemd/system/systemd-time-wait-sync.service; enabled; vendor preset: enabled)
     Active: activating (start) since Fri 2021-07-23 15:32:12 UTC; 19s ago

[regression potential]

TBD

[scope]

this is needed in f and later

the systemd-timesyncd package was split out from the main systemd package starting in focal, so this problem exists in f and later

the service doesn't exist in b, so this is not needed there

[other info]

originally noticed in bug 1937238, but create this new bug in case that bug was actually a separate problem

[Brian Murray (brian-murray)]

The Hirsute Hippo has reached End of Life, so this bug will not be fixed for that release.

[Nick Rosbrook (enr0n)]

Not sure yet about SRU'ing this, but this should at least be fixed in devel.