develop: Enable namespace labels propagation

[fmesen]

Proposed changes

Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request. If it fixes a bug or resolves a feature request, be sure to link to that issue.

These changes allow to enable the propagation of namespace labels into pod logs.

Types of changes

What types of changes does your code introduce? Put an x in the boxes that apply

• [ ] Bugfix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

Put an x in the boxes that apply.

• [X] I have read the CONTRIBUTING doc
• [X] I have read the CLA
• [ ] I have added necessary documentation (if appropriate)
• [ ] Any dependent changes have been merged and published in downstream modules

[hvaghani221]

Hey @fmesen, Splunk will very soon deprecate Splunk Connect for Kubernetes and we recommend moving to Splunk OpenTelemetry Collector for Kubernetes which already solves the namespace labels propagation. You can follow migration guide.

Splunk OpenTelemetry Collector for Kubernetes already supports namespace label propagation with additional feature like regex matching. Ref: https://github.com/signalfx/splunk-otel-collector-chart/blob/f4cf82bedf200982040e0bb367d58261662b2a2a/helm-charts/splunk-otel-collector/values.yaml#L199-L224