fix: replace deprecated commonLabels with labels in kustomizations

[triuzzi]

What

Migrates every kustomization.yml in this repo from the deprecated commonLabels field to the modern labels field.

Addresses spinnaker/spinnaker#7716. (Cross-repo, so it won't auto-close — please close manually on merge.)

Why

Recent kustomize versions (bundled with modern kubectl) deprecate commonLabels. Running kubectl kustomize today prints a warning for every occurrence:

# Warning: 'commonLabels' is deprecated. Please use 'labels' instead. Run 'kustomize edit fix' to update your Kustomization automatically.

13 occurrences → 13 warnings.

The one subtlety (why not a plain rename)

commonLabels injects its labels into selectors as well as metadata — Deployment spec.selector.matchLabels, Service spec.selector, and StatefulSet selectors. The modern labels field does not touch selectors unless you opt in. Since matchLabels is immutable on a live Deployment, dropping the label from selectors would be a breaking change on upgrade.

Each entry therefore sets includeSelectors: true:

labels:
- includeSelectors: true
  pairs:
    app.kubernetes.io/name: <service>

Verification — output is unchanged

I compared kubectl kustomize . (kustomize v5.8.1) before and after:

Check	Before	After
Deprecation warnings	13	0
Generated manifest	64 resources / 1903 lines	byte-for-byte identical
commonLabels in repo	13	0

diff of the generated manifests is empty — this change is behavior-neutral and only removes the deprecation warnings.

🤖 Generated with Claude Code

[triuzzi]

@karlskewes 🙏

[karlskewes]

Hi @triuzzi, thank you and I'm sorry but this repository should be archived because the code was moved and since modified in the monorepo here: https://github.com/spinnaker/spinnaker/tree/main/spinnaker-kustomize

It would be ideal if you could close this PR and port/refactor the changes in a PR against the monorepo. Would you mind?

I'll ask in the community slack about archiving this repo.

[jasonmcintosh]

Yeah I'll get those closed/archived shortly & README updated to point to the new location. Thanks and hope you can move this into the core repo!