tree d2736cd305d3a379c53f92ce7fce5756cc8bc6b8
parent 3f75bdded05ad1a416a4bba77b9895c4964e8fbd
author Ievgeniia Zadorozhna <izadorozhna@mirantis.com> 1571157432 +0300
committer Ievgeniia Zadorozhna <izadorozhna@mirantis.com> 1571296062 +0300

Use Neutron API to list networks instead of old Nova '/os-networks'

Starting from Nova API v2.36, the request '/os-networks' is deprecated
and 404 is returned from Nova, see:
https://docs.openstack.org/api-ref/compute/#networks-os-networks-deprecated
So some tests are failing because 404 is received during setup.

Changed default to using neutron networks_client in get_tenant_network.
Proxy apis to neutron like '/os-networks' are deprecated in
microverion 2.36, and calling to them will get 404 error.
So this is to use neutron networks_client as default in get_tenant_network.

Cherry-picked from commits:
f80a1102c452e2f1246dd3e4fad48b7aea7122d2
d1b94eebea0370bd525752e772128b1037b31188

Change-Id: Ib133c6579b5c159222a34061afc4d434ff8dc54d
Related-Issue: PROD-29648