k8sclusterreceiver add node name in pod metadata

[tilakchowdary]

Component(s)

No response

Describe the issue you're reporting

We would like to know pod's node name. I don't see it being reported along with other pod metadata.

https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/receiver/k8sclusterreceiver/internal/pod/pods.go#L132

[github-actions]

Pinging code owners for receiver/k8scluster: @dmitryax @TylerHelmuth @povilasv @ChrsMark. See Adding Labels via Comments if you do not have permissions to add labels yourself. For example, comment '/label priority:p2 -needs-triaged' to set the priority and remove the needs-triaged label.