Pin neutron-tempest-plugin to 0.9.0 for Rocky branch.

This is the last version of the neutron plugin which supports py2.7
Patch also disables centos7 test due to circular dependency

Needed-By: https://review.opendev.org/722923
Change-Id: Ib2a4a7b76090030b672b19016fd0fcddd391e957

vars/main.yml

@@ -73,7 +73,7 @@ _tempest_plugins:
   neutron:
     - name: neutron-tempest-plugin
       repo: https://git.openstack.org/openstack/neutron-tempest-plugin
-      branch: master
+      branch: 0.9.0
   nova-lxd:
     - name: nova-lxd
       repo: https://git.openstack.org/openstack/nova-lxd

zuul.d/project.yaml

@@ -20,11 +20,15 @@
       - release-notes-jobs
     check:
       jobs:
+        - openstack-ansible-functional-centos-7:
+            voting: false
         # TODO(jrosser) Revert this once bionic passes
         - openstack-ansible-functional-ubuntu-bionic:
             voting: false
     gate:
       jobs:
+        - openstack-ansible-functional-centos-7:
+            voting: false
         # TODO(jrosser) Revert this once bionic passes
         - openstack-ansible-functional-ubuntu-bionic:
             voting: false