Add: appProtocol as an option in listeners admin configurations

[lemonprogis]

Hello 👋

When exposing the admin API using Istio as this port isn't made available since it's not an http default name.

When I edit the service and add appProtocol: http the port becomes available with in istio. now it's available.

Since the listeners section is configurable, I added an additional optional key under listeners.admin, but gives the ability to allow instrumentation to pickup that it's not just raw tcp per K8s Service documentation

Istio Docs around automatic detection

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[RafalKorepta]

Could you run the following command?

nix develop -c task ci:lint

[lemonprogis]

@chrisseto I'm unsure why those tests are failing, any help would be appreciated thanks!

[chrisseto]

The chart testing failures are due to docker's rate limits. We generally re-run those until they succeed (or get a new runner with a new IP really)

The go tests are due to changes in the chart's output. appProtocol is now included as null in the output due to a quick in gotohelm, which is technically acceptable.

To update the golden files run nix develop -c go test ./charts/redpanda -short -update and commit the changes. Rafal or I can push the changes in if you'd prefer.

[lemonprogis]

Ok cool, thanks for the offer, but I just pushed the change!

[RafalKorepta]

Due to unexpected quick release of Redpanda v24.2.2 I merged changes to template-cases.golden.txtar. Could you rebase and re-run nix develop -c go test ./charts/redpanda -short -update and push changes?

[RafalKorepta]

I couldn't push changes to your fork. Thank you for the contribution. It will be released soon.