Provide resource labels

[jmendesky]

Overview

It should be possible to configure resource labels that are passed onto resources created by the providers.

This would allow querying resources in the absence of predictable resource names.

Open Questions

Should these labels be configurable in the resource's spec as below (1) or use the resource's metadata labels (2)?

apiVersion: pipelines.kubeflow.org/v1alpha5
kind: Pipeline
metadata:
  name: pipeline-sample
  labels:
    algorithm: penguin-classifier # Option 1
spec:
  ...
  labels:
    algorithm: penguin-classifier # Option 2