In order to make sure we have the correct time early, e.g.
by the time we create a TLS certificate, this patch proposes
to force an immediate NTP update when using chronyd. While
the previous approach uses the passed NTP server as well, the
update may happen only after chronyd has performed measurements
(which may be too late).
Story: #2009058
Task: #42843
Change-Id: I6edafe8edeb8549f324959e7a1ec175c3049a515