[test] Test failed because of ImagePullBackOff

[gaocegege]

Please have a look at https://console.cloud.google.com/kubernetes/pod/us-east1-d/kubeflow-testing/kubeflow-test-infra/kubeflow-tf-operator-presubmit-tfjob-e2e-549-cbd9b69-369-4a11-3244758015?project=kubeflow-ci&tab=details&duration=PT1H&container_summary_list_tablesize=10

Failed to pull image "gcr.io/mlkube-testing/test-worker": rpc error: code = Unknown desc = Error response from daemon: Get https://gcr.io/v2/mlkube-testing/test-worker/manifests/latest: denied: Token exchange failed for project 'mlkube-testing'. Please enable or contact project owners to enable the Google Container Registry API in Cloud Console at https://console.cloud.google.com/apis/api/containerregistry.googleapis.com/overview?project=mlkube-testing before performing this operation.
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The issue blocks #549 #565 #566

PTAL @jlewi @ankushagarwal

[ankushagarwal]

Need to update https://github.com/kubeflow/tf-operator/blob/0704e24dbd3b5ea720e1e23e854b516905396c3d/test/workflows/components/workflows.libsonnet#L57 to gcr.io/kubeflow-ci/test-worker:latest

[gaocegege]

Thanks, I will update it.