Comment 1 for bug 1942913

In OVN, when a new network and the first subnet are created, a metadata port is created (with an IP address assigned). This is not happening with other ML2 drivers.

The method "_check_network_internal_connectivity" [1] retrieves the network ports (that belong to a project) and filters those ones with "device_owner" "network:xxx" and "compute:xxx". From this list we need to remove the metadata ports; the "device_owner" of the metadata ports is "network:distributed" [2][3].

[1]https://github.com/openstack/tempest/blob/393e94a604f29940025c2c2d8f406419e7733e5c/tempest/scenario/test_network_basic_ops.py#L332-L338
[2]https://review.opendev.org/c/openstack/neutron-lib/+/732141
[3]https://review.opendev.org/c/openstack/neutron/+/732364