fix(ci): remove Grove mutation assertion

[lavanyavijayk]

Overview:

Follow-up to #12368 that prevents the deploy-operator CI job from reporting a false
Grove webhook failure.

Details:

• Remove the explicit headlessServiceConfig JSON assertion.

• Keep the real server-side PodCliqueSet admission request.

• Keep the mutating and validating webhook configuration checks.

• Avoid a false failure when a successful kubectl response includes a warning before
  the JSON output, causing jq to report a parse error.

• The failed CI output confirmed that Grove applied the expected mutation
  successfully.

Validated by parsing the composite action YAML and checking all embedded Bash blocks
with bash -n.

Where should the reviewer start?

Review .github/actions/setup-dynamo-operator/action.yml, specifically the Grove
admission smoke test in the Verify operator image and admission webhooks step.

Related Issues

🔗 This PR is linked to an issue:

• Relates to vCluster Kubernetes version skew corrupts Pod readiness and breaks operator webhooks in deploy CI #12266

---

Summary by CodeRabbit

• Bug Fixes
  • Updated operator verification to use the Grove PodCliqueSet webhook smoke test.
  • Removed an outdated admission webhook mutation check from the verification workflow.
  • Continued validation of Grove defaulting and validating webhook configurations.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[nv-tusharma]

approving to unblock CI

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 5f38179b-c2df-4c33-a556-420f30a2ad99

📥 Commits

Reviewing files that changed from the base of the PR and between a2cfdc9 and f32d264.

📒 Files selected for processing (1)

• .github/actions/setup-dynamo-operator/action.yml

---

Walkthrough

The operator setup action removes the Grove defaulting-webhook mutation assertion from the smoke-test step. It continues running the Grove PodCliqueSet smoke test and verifying the defaulting and validating webhook configurations.

Changes

Grove webhook verification

Layer / File(s)	Summary
Simplify Grove admission smoke verification .github/actions/setup-dynamo-operator/action.yml	Runs the Grove PodCliqueSet smoke test without the removed headlessServiceConfig mutation assertion, while retaining webhook configuration checks.

Estimated code review effort: 2 (Simple) | ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely matches the main change: removing the Grove mutation assertion from CI.
Description check	✅ Passed	The description covers Overview, Details, reviewer start, and Related Issues, matching the template well enough.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

---

_{Comment @coderabbitai help to get the list of available commands.}