feat(workflow-controller): make log level configurable

[pcandido]

What this PR does / why we need it:

Adds the ability to override the workflow-controller log level and glog verbosity via Helm values. Today --loglevel is hardcoded to debug and --gloglevel to "1" in the Deployment, so operators cannot reduce log volume without forking or post-rendering.

In multi-cluster setups (e.g. 20+ clusters), the litmus-agent-workflow-controller at debug generates a large amount of logs (e.g. 30k+ records per 15 minutes), increasing ingestion and storage cost. This change adds:

• appSettings.loglevel (default: debug, for compatibility) — controls the application log level (debug, info, warn, error). Installers can set e.g. workflow-controller.appSettings.loglevel: "info" to cut debug noise.
• appSettings.gloglevel (default: "1", for compatibility) — controls glog verbosity (numeric; higher = more verbose). Installers can set e.g. workflow-controller.appSettings.gloglevel: "0" to reduce glog output.

Both keep existing behavior by default so the chart remains backward compatible.

Which issue this PR fixes

fixes #474

Special notes for your reviewer:

• Defaults remain loglevel: debug and gloglevel: "1" for backward compatibility.
• Only the workflow-controller subchart was changed; chart version bumped 0.2.2 → 0.2.3 (patch).
• litmus-agent/Chart.yaml dependency on workflow-controller updated to 0.2.3.

Checklist

• DCO signed
• Chart Version bumped
• Variables are documented in the README.md

---

@Vr00mm @ispeakc0de @Jonsy13

[Vr00mm]

Hello, great job.
Its render well on my side.

You don't need to edit the README.md since this one is generated by the CI.

Test 1: Default Values (Backward Compatibility)

Command:

helm template charts/litmus-agent charts/litmus-agent

Expected:

- --loglevel
- debug
- --gloglevel
- "1"

Result:

- --loglevel
- debug
- --gloglevel
- "1"

✅ PASS - Default values render correctly

Test 2: Custom Values (info, "0")

Command:

helm template charts/litmus-agent charts/litmus-agent \
  --set workflow-controller.appSettings.loglevel=info \
  --set workflow-controller.appSettings.gloglevel="0"

Expected:

- --loglevel
- info
- --gloglevel
- "0"

Result:

- --loglevel
- info
- --gloglevel
- "0"

✅ PASS - Custom values override correctly

Test 3: Different Values (error, "2")

Command:

helm template charts/litmus-agent charts/litmus-agent \
  --set workflow-controller.appSettings.loglevel=error \
  --set workflow-controller.appSettings.gloglevel="2"

Expected:

- --loglevel
- error
- --gloglevel
- "2"

Result:

- --loglevel
- error
- --gloglevel
- "2"

✅ PASS - Different values work correctly

Summary

All helm template tests pass successfully:

• ✅ Default values maintain backward compatibility (debug, "1")
• ✅ Custom values can be overridden via Helm --set
• ✅ Multiple different values work as expected
• ✅ Chart renders without errors

The PR changes are working as expected!

[pcandido]

Thanks for the tip @Vr00mm. The CI actually asked me to run helm-docs locally from the litmus-agent root, so I had to add an extra commit.

[pcandido]

Hi everyone,

Just a gentle bump on this PR since it has been open for a while. Could someone please take a look when you have a chance?

Thanks!
@imrajdas @ksatchit @Saranya-jena @ispeakc0de @Jonsy13

[pcandido]

Hi maintainers! 👋

I apologize for the recent force push on this PR.

When I tried to resolve the merge conflicts using GitHub's web interface, I made a mistake during the conflict resolution. To fix this properly, I reverted the changes (via force push) and redid the merge carefully to ensure everything is correct now.

The PR is now updated and ready for review. Sorry for any inconvenience this may have caused, and I appreciate your patience! 🙏

Looking forward to your feedback when you have a chance to review.

Thanks!