Delete the notebook tests because they are outdated. (kubeflow#808)

* Delete the notebook tests because they are outdated.

* We have rewritten the test infra for notebooks to use Tekton.
  see:
    https://github.com/kubeflow/testing/blob/master/tekton/templates/pipelines/notebook-test-pipeline.yaml
    https://github.com/kubeflow/examples/tree/master/py/kubeflow/examples/notebook_tests

* We are also no longer regularly deploying the v1 clusters; we are no using
  blueprints so that's why the tests can no longer get credentials

* * Add the mnist notebook test as a postsubmit and periodic test.

* Fix.

mnist/tests/mnist-nb-pipeline-run.yaml

@@ -0,0 +1,47 @@
+# Demo on how to write a pipeline run.
+
+apiVersion: tekton.dev/v1alpha1
+kind: PipelineRun
+metadata:
+  generateName: mnist-
+  namespace: kf-ci
+  labels:
+    pipeline: mnist-notebook
+spec:
+  params:
+  # test-target-name, artifacts-gcs, and junit-path are required for
+  # all the PipelineRuns. For tests spawned by Prow, values of these
+  # params will be injected on the fly.
+  - name: test-target-name
+    value: manual-testinig
+  - name: artifacts-gcs
+    value: gs://kubeflow-ci_temp/jlewi_mnist_testing/2020-0619
+  - name: junit-path
+    value: artifacts/junit_manual-testing
+  - name: testing-cluster-pattern
+    value: 'kf-vbp-.*'
+  - name: testing-cluster-location
+    value: 'us-central1-c'
+  - name: notebook-output
+    value: gs://kubeflow-ci-deployment_ci-temp/mnist_test
+  - name: notebook-path
+    value: mnist/mnist_gcp.ipynb
+  resources:
+  - name: notebook-repo
+    resourceSpec:
+      type: git
+      params:
+      - name: url
+        value: https://github.com/kubeflow/examples.git
+      - name: revision
+        value: master
+  # The image we want to build
+  - name: image
+    resourceSpec:
+      type: image
+      params:
+      - name: url
+        value: gcr.io/kubeflow-ci-deployment/mnist-test
+  pipelineRef:
+    name: notebook-test
+  serviceAccountName: kf-ci

prow_config.yaml

@@ -45,31 +45,8 @@ workflows:
     include_dirs:
       - pytorch_mnist/*
 
-  # E2E test for various notebooks
-  # New notebooks can just add a step to the workflow
-  - py_func: kubeflow.examples.create_e2e_workflow.create_workflow
-    name: notebooks
+  - tekton_run: kubeflow/examples/tests/mnist-nb-pipeline-run.yaml
+    name: mnist-notebook
     job_types:
-      - periodic
-      - presubmit
-      - postsubmit
-    include_dirs:
-      - xgboost_synthetic/*
-      - mnist/*
-      - py/kubeflow/examples/notebook_tests
-      - py/kubeflow/examples/create_e2e_workflow.py
-
-  # E2E test for various notebooks
-  # New notebooks can just add a step to the workflow
-  - py_func: kubeflow.examples.create_e2e_workflow.create_workflow
-    name: notebooks-v1
-    job_types:
-      - periodic
-      - presubmit
-      - postsubmit
-    include_dirs:
-      - xgboost_synthetic/*
-      - mnist/*
-      - py/kubeflow/examples/create_e2e_workflow.py
-    kwargs:
-      cluster_pattern: kf-v1-(?!n\d\d)
+    - periodic
+    - postsubmit