live migration is not fully supported

Fix proposed to branch: master
Review: https://review.openstack.org/400391

So far ODL backend, netvirt, is not supposed to suppose live migration.
handling two ports with same uuid.

So mark this confirmed with low priority.

Netvirt is not the only ODL backend that would potentially need this. GBP also needs this. From what I can tell, we need to add support for binding:profile for ports:
neutron port-show 87caef9e-cf0e-4e16-9d36-34a48cebce3c
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+-----------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| admin_state_up | True |
| allowed_address_pairs | |
| binding:host_id | overcloud-novacompute-1.opnfv.org |
| binding:profile | {"migrating_to": "overcloud-novacompute-0.opnfv.org"} |
| binding:vif_details | {"has_datapath_type_netdev": "False", "port_prefix": "socket_", "vhostuser_socket_dir": "/tmp/", "vhostuser_mode": "server", "vhostuser_socket": "/tmp/socket_87caef9", "support_vhost_user": "True"} |
| binding:vif_type | vhostuser |
| binding:vnic_type | normal |
| created_at | 2017-10-17T15:48:55Z |
| description | | ...

This is already triaged as low.