Comment 3 for bug 1353544

Text suggested for release notes:

If both the keystone token and the Horizon session are expired, the user is asked to login
twice. This is because the token expiration is not checked when the user is logged-out
due to session expiration - so he logs in just to find that the token had also expired, and
needs to log in second time. This is a known issue, the corresponding patches are being
reviewed in upstream (https://review.openstack.org/#/c/88220/
https://review.openstack.org/#/c/101556/).