Updated openstack/openstack
Project: openstack/tempest  9c3f3ac6162437155402c2765cd8312335d6fab3
null
Create only necessary networks resources for scenario tests

This patch leverages the set_network_resources method in
order to limit the network resources used.

Change-Id: Ia7defc783b5f55504e6c6923069f989a389a639f