Update supported OS releases
Drop a few OS releases that are EOL and add some fresh Fedora ones.
I just updated the PR to drop the now unused data/Debian-8.yaml and data/Ubuntu-16.04.yaml files.
What about adding Ubuntu 22.04 as supported?
I prefer that dropping of OS support is done in an individual PR so that it appears clearly in the generated changelog.
I agree with @jhoblitt so I've merged his PRs. Can you rebase this?
Most of the OS support changes were implemented as:
- #305
- #307
- #308
- #310
@ekohl @jhoblitt done.