Add Ubuntu 22.04 support

[martialblog]

Pull Request (PR) description

Since the PR #658 to add support for Ubuntu 22.04 wasn't moving forward, I tried to get things moving.

This adds Ubuntu 22.04 support.

This Pull Request (PR) fixes the following issues

No open issue regarding this feature.

[martialblog]

There were some existing lint errors, I added a new commit to address them.

[martialblog]

There are currently no Ubuntu 22.04 Acceptance Tests in the CI.

Ran the beaker suite locally without any issues:

BEAKER_setfile=ubuntu2204-64 bundle exec rake beaker
...
Finished in 1 minute 31.16 seconds (files took 36.78 seconds to load)
8 examples, 0 failures

[smortex]

Please update metadata.json to add Ubuntu 22.04. That way the CI will run on his OS too.

[martialblog]

@smortex Hi, thanks for the hint. I updated the metadata

[martialblog]

Anything I can help with to get this train in the station? I'd love to see this merged for a downstream project.

Cheers Markus