[exporter/signalfx] Preserve k8s.service property names

[jinja2]

Component(s)

exporter/signalfx

Is your feature request related to a problem? Please describe.

The k8s cluster receiver now supports k8s.service metrics and entity/metadata. When the signalfx exporter receives metadata updates or entity events for k8s.service.uid dimensions, it currently converts all k8s.service.* property names to kubernetes_service_* (e.g., k8s.service.name becomes kubernetes_service_name). This conversion was originally added for properties attached to k8s.pod.uid dimensions as sfTags, but it should not apply when the dimension itself is k8s.service.uid.

Describe the solution you'd like

Skip the k8s.service. to kubernetes_service_ property name conversion when the dimension key is k8s.service.uid

Describe alternatives you've considered

No response

Additional context

No response

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[github-actions]

Pinging code owners:

• exporter/signalfx: @dmitryax @crobert-1

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