Change url in middleware test to v3
Change url in middleware test to v3

This changes the url for checking normalized URLS with middleware from
v2.0 urls to v3.

Change-Id: Ic78d7842d7b3c36c2eb9cd74a3bd04b837af77c0

mahak/keystone,openstack/keystone,openstack/keystone,mahak/keystone,openstack/keystone,mahak/keystone