Delete the continuous release-0.2 and release-0.3 integration flows (k…

…native#624)

They are extremely flaky and provide no value anymore.

ci/prow/config.yaml

@@ -1541,90 +1541,6 @@ periodics:
     - name: test-account
       secret:
         secretName: test-account
-- cron: "15 8 * * *"
-  name: ci-knative-serving-0.2-continuous
-  agent: kubernetes
-  spec:
-    containers:
-    - image: gcr.io/knative-tests/test-infra/prow-tests:stable
-      imagePullPolicy: Always
-      args:
-      - "--scenario=kubernetes_execute_bazel"
-      - "--clean"
-      - "--job=$(JOB_NAME)"
-      - "--repo=github.com/knative/serving=release-0.2"
-      - "--root=/go/src"
-      - "--service-account=/etc/test-account/service-account.json"
-      - "--upload=gs://knative-prow/logs"
-      - "--timeout=90" # Avoid overrun
-      - "--" # end bootstrap args, scenario args below
-      - "--" # end kubernetes_execute_bazel flags (consider following flags as text)
-      - "./hack/release.sh"
-      - "--nopublish"
-      - "--notag-release"
-      securityContext:
-        privileged: true
-      volumeMounts:
-      - name: docker-graph
-        mountPath: /docker-graph
-      - name: test-account
-        mountPath: /etc/test-account
-        readOnly: true
-      env:
-      - name: DOCKER_IN_DOCKER_ENABLED
-        value: "true"
-      - name: GOOGLE_APPLICATION_CREDENTIALS
-        value: /etc/test-account/service-account.json
-      - name: E2E_CLUSTER_REGION
-        value: us-central1
-    volumes:
-    - name: docker-graph
-      emptyDir: {}
-    - name: test-account
-      secret:
-        secretName: test-account
-- cron: "20 8 * * *"
-  name: ci-knative-serving-0.3-continuous
-  agent: kubernetes
-  spec:
-    containers:
-    - image: gcr.io/knative-tests/test-infra/prow-tests:stable
-      imagePullPolicy: Always
-      args:
-      - "--scenario=kubernetes_execute_bazel"
-      - "--clean"
-      - "--job=$(JOB_NAME)"
-      - "--repo=github.com/knative/serving=release-0.3"
-      - "--root=/go/src"
-      - "--service-account=/etc/test-account/service-account.json"
-      - "--upload=gs://knative-prow/logs"
-      - "--timeout=90" # Avoid overrun
-      - "--" # end bootstrap args, scenario args below
-      - "--" # end kubernetes_execute_bazel flags (consider following flags as text)
-      - "./hack/release.sh"
-      - "--nopublish"
-      - "--notag-release"
-      securityContext:
-        privileged: true
-      volumeMounts:
-      - name: docker-graph
-        mountPath: /docker-graph
-      - name: test-account
-        mountPath: /etc/test-account
-        readOnly: true
-      env:
-      - name: DOCKER_IN_DOCKER_ENABLED
-        value: "true"
-      - name: GOOGLE_APPLICATION_CREDENTIALS
-        value: /etc/test-account/service-account.json
-      - name: E2E_CLUSTER_REGION
-        value: us-central1
-    volumes:
-    - name: docker-graph
-      emptyDir: {}
-    - name: test-account
-      secret:
-        secretName: test-account
 - cron: "25 8 * * *"
   name: ci-knative-serving-0.4-continuous
   agent: kubernetes

ci/prow/config_knative.yaml

@@ -102,12 +102,6 @@ periodics:
     - continuous: true
       cron: "1 */2 * * *" # Run every other hour and one minute
       timeout: 100
-    - branch-ci: true
-      release: "0.2"
-      cron: "15 8 * * *" # Run at 01:15PST every day (08:15 UTC)
-    - branch-ci: true
-      release: "0.3"
-      cron: "20 8 * * *" # Run at 01:20PST every day (08:20 UTC)
     - branch-ci: true
       release: "0.4"
       cron: "25 8 * * *" # Run at 01:25PST every day (08:25 UTC)

ci/testgrid/config.yaml

@@ -164,10 +164,6 @@ test_groups:
   gcs_prefix: knative-prow/logs/ci-knative-client-go-coverage
   num_failures_to_alert: 9999
   short_text_metric: "coverage"
-- name: ci-knative-serving-0.2-continuous
-  gcs_prefix: knative-prow/logs/ci-knative-serving-0.2-continuous
-- name: ci-knative-serving-0.3-continuous
-  gcs_prefix: knative-prow/logs/ci-knative-serving-0.3-continuous
 - name: ci-knative-serving-0.4-continuous
   gcs_prefix: knative-prow/logs/ci-knative-serving-0.4-continuous
 dashboards:
@@ -290,16 +286,6 @@ dashboards:
   - name: coverage
     test_group_name: pull-knative-client-test-coverage
     base_options: "exclude-filter-by-regex=Overall$&group-by-directory=&expand-groups=&sort-by-name="
-- name: knative-serving-0.2
-  dashboard_tab:
-  - name: continuous
-    test_group_name: ci-knative-serving-0.2-continuous
-    base_options: "sort-by-name="
-- name: knative-serving-0.3
-  dashboard_tab:
-  - name: continuous
-    test_group_name: ci-knative-serving-0.3-continuous
-    base_options: "sort-by-name="
 - name: knative-serving-0.4
   dashboard_tab:
   - name: continuous
@@ -317,12 +303,6 @@ dashboard_groups:
   - "knative-pkg"
   - "knative-caching"
   - "knative-client"
-- name: knative-0.2
-  dashboard_names:
-  - "knative-serving-0.2"
-- name: knative-0.3
-  dashboard_names:
-  - "knative-serving-0.3"
 - name: knative-0.4
   dashboard_names:
   - "knative-serving-0.4"