[Openstack-stable-maint] stable/havana jobs failing due to keystone bug 1357652

I'm seeing some nova stable/havana patches failing consistently on keystone bug 1357652 [1], keystone won't start due to an import error. I'm not seeing any recent changes for keystone in stable/havana so not sure if this is an infra issue or something else. I'm also not seeing the hits in logstash for some reason, which is odd. [1] https://bugs.launchpad.net/keystone/+bug/1357652 -- Thanks, Matt Riedemann