Patch [0] dropped mapping the tenant_id attribute to project_id.
However, the Neutron API still returns the tenant_id attribute in
addition to the project_id and so we still need to discard it from
the output.
[0] I5f62f2a76592eaaaed6703624e959df41a6ecc8f
Signed-off-by: Dr. Jens Harbott <harbott@osism.tech>
Change-Id: Iba1e003bf587802f28928cb44d160b3b3fb1f840