Tempest: Adopt keystone api v3 for tests

Adopt v3 for the few tests that require v3 endpoint

Change-Id: I2bcc9ac2949f5f4d7e22a83f3839b97a775763db
3 files changed
tree: fc3b9f1372bd1136c602385bfc0589aae314a70c
  1. neutron/