Add ovn-upgrade-rollback job for 4.7->4.8

ci-operator/config/openshift/release/openshift-release-master__ci-4.8-upgrade-from-stable-4.7.yaml

@@ -48,6 +48,14 @@ tests:
     env:
       TEST_TYPE: upgrade-conformance
     workflow: openshift-upgrade-aws-ovn
+- as: e2e-aws-ovn-upgrade-rollback
+  interval: 24h
+  steps:
+    cluster_profile: aws
+    env:
+      TEST_TYPE: upgrade-conformance
+      TEST_UPGRADE_OPTIONS: abort-at=99
+    workflow: openshift-upgrade-aws-ovn
 - as: e2e-gcp-ovn-upgrade
   interval: 24h
   steps:

ci-operator/jobs/openshift/release/openshift-release-master-periodics.yaml

@@ -4691,6 +4691,81 @@ periodics:
     - name: result-aggregator
       secret:
         secretName: result-aggregator
+- agent: kubernetes
+  cluster: build01
+  decorate: true
+  decoration_config:
+    skip_cloning: true
+  extra_refs:
+  - base_ref: master
+    org: openshift
+    repo: release
+  interval: 24h
+  labels:
+    ci-operator.openshift.io/prowgen-controlled: "true"
+    ci-operator.openshift.io/variant: ci-4.8-upgrade-from-stable-4.7
+    job-release: "4.8"
+    pj-rehearse.openshift.io/can-be-rehearsed: "true"
+  name: periodic-ci-openshift-release-master-ci-4.8-upgrade-from-stable-4.7-e2e-aws-ovn-upgrade-rollback
+  spec:
+    containers:
+    - args:
+      - --gcs-upload-secret=/secrets/gcs/service-account.json
+      - --image-import-pull-secret=/etc/pull-secret/.dockerconfigjson
+      - --lease-server-credentials-file=/etc/boskos/credentials
+      - --report-credentials-file=/etc/report/credentials
+      - --secret-dir=/secrets/ci-pull-credentials
+      - --secret-dir=/usr/local/e2e-aws-ovn-upgrade-rollback-cluster-profile
+      - --target=e2e-aws-ovn-upgrade-rollback
+      - --variant=ci-4.8-upgrade-from-stable-4.7
+      command:
+      - ci-operator
+      image: ci-operator:latest
+      imagePullPolicy: Always
+      name: ""
+      resources:
+        requests:
+          cpu: 10m
+      volumeMounts:
+      - mountPath: /etc/boskos
+        name: boskos
+        readOnly: true
+      - mountPath: /secrets/ci-pull-credentials
+        name: ci-pull-credentials
+        readOnly: true
+      - mountPath: /usr/local/e2e-aws-ovn-upgrade-rollback-cluster-profile
+        name: cluster-profile
+      - mountPath: /secrets/gcs
+        name: gcs-credentials
+        readOnly: true
+      - mountPath: /etc/pull-secret
+        name: pull-secret
+        readOnly: true
+      - mountPath: /etc/report
+        name: result-aggregator
+        readOnly: true
+    serviceAccountName: ci-operator
+    volumes:
+    - name: boskos
+      secret:
+        items:
+        - key: credentials
+          path: credentials
+        secretName: boskos-credentials
+    - name: ci-pull-credentials
+      secret:
+        secretName: ci-pull-credentials
+    - name: cluster-profile
+      projected:
+        sources:
+        - secret:
+            name: cluster-secrets-aws
+    - name: pull-secret
+      secret:
+        secretName: registry-pull-credentials
+    - name: result-aggregator
+      secret:
+        secretName: result-aggregator
 - agent: kubernetes
   cluster: build01
   decorate: true

core-services/testgrid-config-generator/_allow-list.yaml

@@ -342,6 +342,7 @@ periodic-ci-openshift-release-master-ocp-4.8-e2e-metal-ipi-upgrade: informing
 release-openshift-ocp-installer-e2e-openstack-4.8: informing
 release-openshift-ocp-installer-e2e-openstack-serial-4.8: informing
 release-openshift-origin-installer-e2e-aws-ovn-upgrade-4.7-stable-to-4.8-ci: informing
+release-openshift-origin-installer-e2e-aws-ovn-upgrade-rollback-4.7-to-4.8: informing
 release-openshift-origin-installer-e2e-azure-ovn-upgrade-4.7-stable-to-4.8-ci: informing
 release-openshift-origin-installer-e2e-gcp-ovn-upgrade-4.7-stable-to-4.8-ci: informing
 release-openshift-origin-installer-e2e-remote-libvirt-ppc64le-4.8: informing