Comment 3 for bug 1403798

It looks like we have next scenario:

1. Keystone service has been started by puppet - https://github.com/stackforge/fuel-main/blob/master/docker/keystone/start.sh#L9
2. The fuel upgrade checkers were passed successfully, and the OpenStack upgrader is about to execute.
3. The keystone service is shutdown due to https://github.com/stackforge/fuel-main/blob/master/docker/keystone/start.sh#L15
4. OpenStack upgrader fails to retrieve token.

Solution?

We should either do not restart keystone or do not launch it by puppet.