A runtime input with namespace selector will filter out namespace-less metrics

[a-thaler]

Description

A MetricPipeline with input:

    runtime:
      enabled: true
      namespaces:
        include:
        - cap
      resources:
        container:
          enabled: true
        node:
          enabled: true
        pod:
          enabled: true
        volume:
          enabled: true

so having node metrics enabled and a namespace selector defined, will filter out all node metrics as they do not belong to any namespace.

Expected result
The namespace selector will not be effective for namespace-less metrics as I explicitly enabled the selector

Actual result
Namespace-less metrics are getting filtered out

Steps to reproduce

Troubleshooting

Release Notes