websso does not work with https connection

[Rodrigo Barbieri]

Upon deploying keystone and openstack-dashboard with SSL and keystone-saml-mellon, http access to the dashboard using HTTP works, but HTTPS does not, producing the following error in the logs:

(keystone.api.auth): 2022-02-14 14:19:43,727 ERROR https://10.5.100.5/auth/websso/ is not a trusted dashboard host
(keystone.server.flask.application): 2022-02-14 14:19:43,731 WARNING Authorization failed. The request you have made requires authentication. from 10.5.2.27

Looking at the config files, I found:

[federation]
trusted_dashboard = http://10.5.100.5/auth/websso/

The expected value should be https instead of http, according to [1]

[1] https://github.com/openstack/charm-openstack-dashboard/blob/82897f8f5fde0ef2c639b18a2499d2f033ce37c5/hooks/horizon_hooks.py#L448

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-openstack-dashboard/+/829123

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-openstack-dashboard/+/829123
Committed: https://opendev.org/openstack/charm-openstack-dashboard/commit/a322faa469367590d46ace66c9538824edf82ab9
Submitter: "Zuul (22348)"
Branch: master

commit a322faa469367590d46ace66c9538824edf82ab9
Author: Rodrigo Barbieri <email address hidden>
Date: Mon Feb 14 15:43:46 2022 -0300

    Fix ssl_key var name

    Incorrect config key was responsible for bugs when configuring
    websso when using SSL.

    Closes-bug: #1960854
    Change-Id: I241c7492ffcddf11c6b6464391fe986c61895b19