v2: k8s.cluster.name missing in resource attributes

[marcomusso]

Application Observability complains that the instrumentation of my services doesn't include k8s.cluster.name as a resource attribute. It's in fact present in spans metadata (=> otelcol.processor.attributes upserts it) but not in resource attributes.

Could have been gone missing in the k8s attribute processor? Here is a snippet from the configMap of the receiver daemonset:

   extract {
      metadata = ["k8s.namespace.name","k8s.pod.name","k8s.deployment.name","k8s.statefulset.name","k8s.daemonset.name","k8s.cronjob.name","k8s.job.nam
","k8s.node.name","k8s.pod.uid","k8s.pod.start_time"[]
    }