Comment 9 for bug 1584938

Hit this again with a ceph/ceph deployment on scapestack. This also showed the authorization problem:

[From /var/log/glance-simplestreams-sync.log]
DEBUG * 05-26 21:37:37 [PID:18215] * glanceclient.common.http *
HTTP/1.1 401 Unauthorized
date: Thu, 26 May 2016 21:37:37 GMT
content-length: 46
content-type: text/plain; charset=UTF-8
x-openstack-request-id: req-db3baa69-8643-4460-8ded-d5c8fe3d8327
www-authenticate: Keystone uri='http://10.96.8.159:5000'

401 Unauthorized

Authentication required

This authorization error appears to be connected to a re-generation of the image-stream creds:
[From /var/log/juju/unit-keystone-0.log]
2016-05-26 21:37:17 DEBUG juju-log identity-service:64: Service entry for 'image-stream' already exists.
2016-05-26 21:37:17 INFO juju-log identity-service:64: Endpoint template already exists for 'image-stream' in 'region1'
2016-05-26 21:37:18 DEBUG juju-log identity-service:64: Creating service credentials for 'image-stream'
2016-05-26 21:37:18 DEBUG juju-log identity-service:64: User 'image-stream' already exists - updating password
2016-05-26 21:37:18 INFO juju-log identity-service:64: Updating password for user 'image-stream'
2016-05-26 21:37:19 INFO juju-log identity-service:64: Successfully updated password for user 'image-stream'