List networks with limit and filter by provider network attrs

Added a new test to filter networks by provider network attributes
('provider:network_type', 'provider:physical_network' and
'provider:segmentation_id'). The test also uses the "limit" parameter,
to check that the requested number of registers is returned (check
bug description).

Depends-On: https://review.opendev.org/c/openstack/neutron/+/949771
Depends-On: https://review.opendev.org/c/openstack/neutron/+/950324
Depends-On: https://review.opendev.org/c/openstack/neutron/+/950327
Depends-On: https://review.opendev.org/c/openstack/neutron/+/950328

Related-Bug: #2109354
Change-Id: Ic2a8d520a8525080f68a9a81a17f4d000ca718a8
1 file changed