[Merge] ~rbalint/ubuntu-release-upgrader:ubuntu/master into ubuntu-release-upgrader:ubuntu/master

[Balint Reczey]

@juliank I agree with @xnon's reasoning but I also agree that we don't have enough time to discuss all aspects before the release.

People not wanting to install systemd-timesyncd can pin it to -1 before do-release-upgrade and both of the fix variants work AFAICT, so I'd like to have one one of them in.


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https://code.launchpad.net/~rbalint/ubuntu-release-upgrader/+git/ubuntu-release-upgrader/+merge/382454
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