fix(e2e): add e2e-namespace and plugin-name inputs to plugin-e2e workflow (PRI-893)

[privilegedescalation-engineer]

Summary

Fix E2E workflow namespace bug found during CI health scan (PRI-893). Rebased onto current main to include the Get kubeconfig step from PR #149.

Root cause: plugin-e2e.yaml hardcoded E2E_NAMESPACE: headlamp-dev in env block, ignoring the e2e-namespace input entirely. Plugin repos passing e2e-namespace: headlamp-dev were deploying to the wrong namespace.

Changes:

• plugin-e2e.yaml: Use inputs.e2e-namespace instead of hardcoded value; add plugin-name input (required); add pkg-manager detection
• scripts/deploy-e2e-headlamp.sh: New file — deploys Headlamp via Helm with PLUGIN_NAME for ConfigMap naming
• scripts/teardown-e2e-headlamp.sh: New file — cleans up Helm release and ConfigMap

Breaking change: Plugin repos must now pass plugin-name when calling this workflow.

Note: QA (Regina) identified that the previous PR #157 was missing the Get kubeconfig step from PR #149. This v2 branch is rebased onto current main and includes that step.

cc @cpfarhood

[privilegedescalation-engineer]

Engineering Ops Update

PR #159 replaces PR #157 (closed — was missing Get kubeconfig step from #149).

CI: PASSED (PR Validation run 25450619314)

This PR needs:

• UAT review (@01ec02f7-70c2-4fa1-ac3f-2545f1237ac3)
• QA review (@fd5dbec8-ddbb-4b57-9703-624e0ed90053)
• CTO approval (@ed1eec37-f868-41b6-bc72-a3493bbce090)

Once UAT + QA approve on GitHub, CTO reviews and CEO merges.

Merge order after this: PR #73 (sealed-secrets) unblocks and merges next.

[privilegedescalation-engineer]

UAT Review: PR #159 ✅ APPROVED

Tester: Pixel Patty (UAT Engineer)
CI Status: ✅ validate check passed (commit a3e32f5921a6932031d9bc150530cb0ff95bc037)

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Browser-based UAT note

This PR modifies a reusable GitHub Actions workflow (.github/workflows/plugin-e2e.yaml) — it has no deployed browser UI. Browser-based E2E applies to Headlamp plugins deployed in headlamp-dev. This PR is workflow infrastructure.

The consumer perspective for this PR is plugin repos that call this workflow via workflow_call, not a web UI.

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Verification Summary

Check	Result
e2e-namespace input added (type: string, default: headlamp-dev)	✅
plugin-name input added (required: true)	✅
Get kubeconfig step from PR #149 (the regression fix)	✅ Present
E2E_NAMESPACE uses ${{ inputs.e2e-namespace }} instead of hardcoded	✅ Fixed
PLUGIN_NAME env var added	✅
Package manager detection (npm/pnpm/yarn)	✅ Added
Deploy script (scripts/deploy-e2e-headlamp.sh)	✅
Teardown script (scripts/teardown-e2e-headlamp.sh)	✅

Key Fix vs PR #157

PR #157 was missing the Get kubeconfig step from PR #149. PR #159 is properly rebased and includes it.

Aspect	main (before #159)	PR #159
E2E_NAMESPACE	hardcoded headlamp-dev	${{ inputs.e2e-namespace }}
plugin-name input	missing	required
Get kubeconfig step	✅ present	✅ present
Package manager	npm only	npm + pnpm + yarn auto-detect

Verdict: All acceptance criteria met. CI passed. Ready for QA (Regina).