ci: add workflow to test default targetAllocator image

[NavaMaklev]

Summary

Add CI validation for target allocator image in opentelemetry-operator Helm chart.

Motivation

Issue #929 describes a failure in version 0.87.0 where the target allocator image wasn’t deployed.
This change integrates a CI check that:

• Enables manager.targetAllocator via Helm,
• Verifies the target allocator pod becomes ready.

This prevents regressions in future releases.

Changes

• Added GitHub workflow: .github/workflows/operator-test.yaml
• Workflow runs ct install with --set manager.targetAllocator.enabled=true and waits for target allocator pod readiness.

Testing

• ✅ Ran ct install locally — chart installs successfully with target allocator pod.
• ✅ Verified GitHub Actions workflow execution (pending merge).

Related Issue

Closes #929

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: NavaMaklev (a03f2d0, eac04bf, cdcb3a2, 42e0136, 941ca2b)

[NavaMaklev]

Hi there 👋

I'm trying to contribute to this project as an individual, but I encountered a message from EasyCLA stating that the Individual CLA option is not enabled for this repository.

Could you please advise on how I should proceed? I’m not contributing on behalf of any organization, and I want to ensure my contribution complies with the project's requirements.

Thank you very much for your help!

Best regards,
Nava

[TylerHelmuth]

@NavaMaklev Individual CLA signing is definitely allowed in Otel. Probably the best next step to get unstuck is to ask in the CNCF's slack channel for easycla.

[NavaMaklev]

I fix it
Thank you @TylerHelmuth

[TylerHelmuth]

@NavaMaklev I'd like to test that this change does the thing we want. Can you push a commit that changes the operator chart's README, bump the chart's version, and re-generates the examples? This will cause the action you've changed to run. Once the tests pass we'll revert the chart changes.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.