commit 7ea7e0a14e6bfdb01972c3cddc26326b12486214
author Trevor McCasland <tm2086@att.com> Thu Jan 17 11:35:39 2019 -0600
committer Nicolas Helgeson <nh202b@att.com> Tue Apr 09 16:46:52 2019 +0000
tree d35bbf6409d05e10f1c8802e4fc7fa214e137fe9
parent 3c5b61396dca81ef1cd81e8d1e93cf12bea6b81f

update identity role tests to work w/ pre-prov

I don't see any limitations by using pre-provisioned
credentials for these tests:

* test_role_create_update_show_list
* test_list_roles
* test_implied_roles_create_check_show_delete
* test_roles_hierarchy
* test_assignments_for_implied_roles_create_delete
* test_domain_roles_create_delete
* test_implied_domain_roles
* test_assignments_for_domain_roles
* test_list_all_implied_roles
* test_grant_list_revoke_role_to_user_on_project
* test_grant_list_revoke_role_to_user_on_domain
* test_grant_list_revoke_role_to_group_on_project
* test_grant_list_revoke_role_to_group_on_domain

By setting force_tenant_isolation=False these tests now be
can executed with backends that don't allow user creation
(immutable user source) like LDAP.

Partial-Bug: #1714277

Change-Id: Id82f3b6187e878abe04a0aea9e7dbb9e8fb6360e