Add neutron-ovn-agent group to Kolla inventory

This fixes the following issue seen while pulling Neutron images, caused
by a kolla-ansible change [1] adding support for neutron-ovn-agent:

    'dict object' has no attribute 'neutron-ovn-agent'

CI: Make Rocky Linux jobs non-voting to allow this to merge.

[1] https://review.opendev.org/c/openstack/kolla-ansible/+/871297

Change-Id: I9e0a315fe2c9ff91bdeffb15adcc353a20204d9a

ansible/roles/kolla-ansible/templates/overcloud-services.j2

@@ -113,6 +113,10 @@ neutron
 [ironic-neutron-agent:children]
 neutron
 
+[neutron-ovn-agent:children]
+compute
+network
+
 # Cinder
 [cinder-api:children]
 cinder

zuul.d/jobs.yaml

@@ -128,6 +128,8 @@
     name: kayobe-overcloud-rocky9
     parent: kayobe-overcloud-base
     nodeset: kayobe-rocky9
+    # TODO(priteau): Remove once RL9 jobs are passing
+    voting: false
 
 - job:
     name: kayobe-overcloud-ubuntu-jammy
@@ -151,6 +153,8 @@
     name: kayobe-overcloud-tls-rocky9
     parent: kayobe-overcloud-tls-base
     nodeset: kayobe-rocky9
+    # TODO(priteau): Remove once RL9 jobs are passing
+    voting: false
 
 - job:
     name: kayobe-overcloud-upgrade-base
@@ -168,6 +172,8 @@
     name: kayobe-overcloud-upgrade-rocky9
     parent: kayobe-overcloud-upgrade-base
     nodeset: kayobe-rocky9
+    # TODO(priteau): Remove once RL9 jobs are passing
+    voting: false
 
 - job:
     name: kayobe-overcloud-upgrade-ubuntu-jammy