Release notes url in wide output

[ubergesundheit]

This PR adds a new column to kubectl get releases -o wide output.

kubectl get release -o wide
NAME      KUBERNETES VERSION   STATE    AGE                    RELEASE NOTES
v11.2.0   1.16.3               active   2020-03-03T11:12:13Z   https://github.com/giantswarm/releases/tree/master/kvm/v11.2.0

I am unsure why the AGE column is different to output on live installations. I've tested this with a local kind cluster (k8s 1.18.2)

Checklist

• Consider SIG UX feedback.
• Update changelog in CHANGELOG.md.
• If adding a new type, ensure that it is added to the CRD unit tests.

[tfussell]

Maybe the default should be an empty string or https://github.com/giantswarm/releases.

[MarcelMue]

I would prefer to just link to the repo as well :)

[ubergesundheit]

Ok just so that we're on the same page: Once I change the value here, I also need to change it in config/crd/v1/release.giantswarm.io_releases.yaml to satisfy the tests.

Is the value here a default value for the release CR?

[tfussell]

Yes, exactly. We create release CRs with helm+kustomize instead of operators so this is unlikely to come up in the near future anyways (i.e. this code won't be executed anywhere except in the test).

[ubergesundheit]

Thanks for the explanation. I'll change this now.

[MarcelMue]

Small nit - looking nice otherwise 🚀

[MarcelMue]

I would prefer to just link to the repo as well :)