[Vector] Forwarder does not handle input namespace selectors.

apiVersion: logging.openshift.io/v1
kind: ClusterLogForwarder
metadata:
  name: instance
  namespace: openshift-logging
spec:
  inputs:
  - name: my-app
    application:
      namespaces: [chat]
  outputs:
  - name: kafka
    type: kafka
    url: tcp://my-cluster-kafka-bootstrap.kafka.svc.cluster.local:9093/my-topic
  pipelines:
  - inputRefs: [my-app]
    outputRefs: [kafka]
 

Feb 16 21:41:14.935  INFO vector::app: Log level is enabled. level="debug"
Feb 16 21:41:14.935  INFO vector::sources::host_metrics: PROCFS_ROOT is unset. Using default '/proc' for procfs root.
Feb 16 21:41:14.935  INFO vector::sources::host_metrics: SYSFS_ROOT is unset. Using default '/sys' for sysfs root.
Feb 16 21:41:14.935  INFO vector::app: Loading configs. path=[("/etc/vector/vector.toml", Some(Toml))]
Feb 16 21:41:14.938 ERROR vector::cli: Configuration error. error=Input "my-app" for transform "pipeline_0_" doesn't exist.