Add first tripleo based OVN scenario job to the project's CI

Change-Id: I8d6b3a3432a5c733346457426d7d0e389817f2ce

.zuul.yaml

@@ -1,3 +1,33 @@
+- job:
+    name: whitebox-neutron-tempest-plugin-ovn-tripleo-ci-centos-9-containers-multinode
+    parent: tripleo-ci-centos-9-containers-multinode
+    branches: ^master$
+    vars:
+      nodes: 1ctlr
+      featureset: '010'
+      featureset_override:
+        tempest_format: container
+        tempest_run_concurrency: 2
+        tempest_tempest_conf_overrides:
+          auth.use_dynamic_credentials: true
+        tempest_test_whitelist:
+          - 'whitebox_neutron_tempest_plugin.tests'
+        use_os_tempest: true
+    irrelevant-files:
+      - ^test-requirements.txt$
+      - ^releasenotes/.*$
+      - ^doc/.*$
+      - ^setup.cfg$
+      - ^.*\.conf\.sample$
+      - ^.*\.rst$
+      - ^tox.ini$
+
 - project:
     templates:
       - tempest-plugin-jobs
+    check:
+      jobs:
+        - whitebox-neutron-tempest-plugin-ovn-tripleo-ci-centos-9-containers-multinode
+    gate:
+      jobs:
+        - whitebox-neutron-tempest-plugin-ovn-tripleo-ci-centos-9-containers-multinode