Currently OpenStackClient uses keystoneclient for authentication.
This change will update OpenStackClient to use keystoneauth for
authentication.
All dependant test have been updated.
Updating how auth_ref is set in the tests to use KSA fixtures had
some racy side-effects. The user_role_list tests failed when they
picked up an auth_ref that was a fixture. This exposed a weakness
in ListUserRole that needed to be fixed at the same time re
handling of unscoped tokens and options.
Change-Id: I4ddb2dbbb3bf2ab37494468eaf65cef9213a6e00
Closes-Bug: 1533369
6ae0d2e8a5