[Katello] Sync repos with username and password


I am trying to sync repository with username and password. In particular
this is SLES repo,
like https://username:password@nu.novell.com/repo/$RCE/SLES11-SP4-Pool/sle-11-x86_64/.
I found this old issue Bug #6637: Repositories with username/password can't be synced - Katello - Foreman and
status is closed, so I believe repo URLs with username and password should
be supported. However I am getting Yum Metadata: Unauthorized error. If I
just copy and paste this url in browser's address bar then it works. It
also works in pure Pulp. Any ideas what is wrong? I am using Katello 2.4.1.