Comment 1 for bug 1978553

By looking at neutron logs and compairing with passing job,

https://logserver.rdoproject.org/54/36254/116/check/periodic-tripleo-ci-centos-9-standalone-tempest-wallaby/d073cbf/logs/undercloud/var/log/containers/neutron/server.log.txt.gz

```
if_exists=True) do_commit /usr/lib/python3.9/site-packages/ovsdbapp/backend/ovs_idl/transaction.py:90
2022-06-14 02:24:28.930 15 ERROR ovsdbapp.backend.ovs_idl.transaction [req-3f5cec56-4039-4520-b6ec-d993b56fe469 9a0073051e7c4a6aae3ed9eb107c44bf e803f82a18c742eba606e656a2fc1e54 - default default] Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/ovsdbapp/backend/ovs_idl/connection.py", line 131, in run
    txn.results.put(txn.do_commit())
  File "/usr/lib/python3.9/site-packages/ovsdbapp/backend/ovs_idl/transaction.py", line 93, in do_commit
    command.run_idl(txn)
  File "/usr/lib/python3.9/site-packages/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/commands.py", line 763, in run_idl
    raise ovn_exc.RevisionConflict(
neutron.common.ovn.exceptions.RevisionConflict: OVN revision number for b30bc58e-35c1-497c-9482-52ad32b0dc19 (type: ports) is equal or higher than the given resource. Skipping update
```

Not sure above error is linked with the failure.