Copy multiple attributes/labels in k8sattributes

[zeitlinger]

Component(s)

processor/k8sattributes

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

As a user, I'd like to add my resource attributes as k8s attributes/labels in a generic way:

opentelemetry.io/resource.deployment.environment should become deployment.environment and so on

Describe the solution you'd like

similar to to the existing regex: field=(?P<value>.+) syntax

k8sattributes:
  auth_type: "serviceAccount"
  passthrough: false
  extract:
   labels:
     - key_regex: opentelemetry.io/resource.(?P<key>.+)
       from: pod

Describe alternatives you've considered

No response

Additional context

No response

[github-actions[bot]]

Pinging code owners:

• processor/k8sattributes: @dmitryax @rmfitzpatrick @fatsheep9146 @TylerHelmuth

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