Comment 2 for bug 1693014

In kolla-ansible we removed ml2 files from those services since it is a file that they don't use.
AFIK, kolla-kubernetes now generate its own config file.
I think this issue not affect kolla-ansible.
Change removing ml2 file from various services: https://review.openstack.org/#/c/447992/
Related bug for the change: https://bugs.launchpad.net/kolla-ansible/+bug/1677163
Regards