title: vertex ai pipeline: label not populating on billing
body: <p>I'm trying to trace how much each pipeline I run on vertex costs. I read about adding labels that lets me filter my billing report based on the <a href="https://cloud.google.com/resource-manager/docs/creating-managing-labels" rel="nofollow noreferrer">labels</a>.</p>
  <p>It says that vertex ai is supported and the api shows the same with a labels kwarg.</p>
  <pre><code>job = aiplatform.PipelineJob(display_name = 'inference',
                                      template_path = tmpdirname + '/' + &quot;inference.json&quot;,
                                      enable_caching = True,
                                      project = 'project id',
                                      location = &quot;europe-west4&quot;,    
                                      parameter_values=params,
                                      credentials=service_account.Credentials.from_service_account_file('service.json'),
                                      labels={'pipeline':job_id}
  </code></pre>
  <p>The pipeline starts and runs through without issue. The label is on the job and I can within the vertex AI pipelines console filter for the job as well. On the billing dashboard it still doesn't exist, when I export the data to bigquery it doesn't exist, I can see the cost for those pipelines I ran but I cannot see those labels and filter on them.</p>
  <p>has anyone managed to get the label filter to work for vertex ai so that you can see the cost of a pipeline job?</p>