[WSGI] Move all OVN jobs to use WSGI API module (1)

NOTE: This is the first patch of many to migrate the ML2/OVN jobs
in this repository.

Jobs migrated:
* neutron-tempest-plugin-ovn
* neutron-tempest-plugin-ovn-enforce-scope-old-defaults

Related-Bug: #2069581
Related-Bug: #2069831
Topic: eventlet-deprecation
Change-Id: I86a3fc753292ae10e88102347d32db75c48ab865
diff --git a/zuul.d/xena_jobs.yaml b/zuul.d/xena_jobs.yaml
index 4d35497..8642b97 100644
--- a/zuul.d/xena_jobs.yaml
+++ b/zuul.d/xena_jobs.yaml
@@ -175,6 +175,7 @@
       network_api_extensions: *api_extensions
       devstack_localrc:
         NETWORK_API_EXTENSIONS: "{{ network_api_extensions | join(',') }}"
+        NEUTRON_DEPLOY_MOD_WSGI: false
       devstack_services:
         q-ovn-metadata-agent: true
         q-ovn-agent: false