keystone_authtoken/auth_uri is deprecated [1]. Use www_authenticate_uri
instead.
keystonemiddleware in requirements and lower constraints should be increased
because www_authenticate_uri was introduced in keystonemiddleware 4.18.0.
[1] https://review.openstack.org/#/c/508522/
Change-Id: I99b0ee941d702a28fb4f392d9747d0e2257a42c8
Closes-Bug: #1788174