Comment 5 for bug 1635306

Some additional information:

1. There used to be a fix that created the role automatically on user creation
https://github.com/openstack/puppet-keystone/commit/1b8010

2. That fix was removed in Sept 2015
https://github.com/openstack/puppet-keystone/commit/8461e9

which means it wasn't there in Mitaka either. It's difficult to say if Keystone, puppet-keystone, some other puppet rule were still creating the role until recently.

The easiest fix for now may be to revert/bring back https://github.com/openstack/puppet-keystone/commit/db8339 , since Horizon still requires the role existing to be fully functional.