[behave] Test that OIDC buttons are present on login pages
There should be a sort of button to login using the SSO server on these applications' login pages:
chat.
www.
grafana.
files.
This way we can at least test that OIDC has been configured for the apps, even though testing the usage of OIDC logins is hard because we have staging certificates.
Edited by Maarten de Waard