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

[Balint Reczey]

@juliank ntp is a package that did not have Provides: time-daemon in Bionic and Eoan, thus those would still be removed with the added check.

I also don't agree with the concept that a package picking up dependency in focal on chrony but not any other time daemon should be removed on upgrade.

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