The networking-ovn code is being moved into the neutron repository as
part of the effort [0].

This change is needed so we are able to install OVN from packages
when running the networking-ovn functional tests along with
the Neutron ones (see [1]). In the old networking-ovn repository we did
compile OVN from source instead of installing it from packages but
that took time. We want to do better in the Neutron repository.

[0] https://blueprints.launchpad.net/neutron/+spec/neutron-ovn-merge
[1] https://review.opendev.org/#/c/697440/

Change-Id: I92ab727d9954eb729c41b9a67ecb60b56883097b
Signed-off-by: Lucas Alvares Gomes <lucasagomes@gmail.com>