[Merge] ~tobhe/ubuntu-seeds:oracular into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:oracular

[Julian Andres Klode]

Review: Approve

Given that this will remove Recommends from the meta packages, we first need to instate the meta package such that existing systems do not end up with these packages becoming auto-removable and autoremoved by ubuntu-release-upgrader.
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https://code.launchpad.net/~tobhe/ubuntu-seeds/+git/ubuntu-seeds/+merge/467849
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