Katello 4.0 content proxy upgrade disaster

[cintrix84]

@gvde

For any repository (e.g during yum repolist) I just got a message like this:

@gvde Starting to look at this. I wonder if you are hitting this guy:

Bug: Smart Proxies do not sync (Katello 3.15 through 3.18 RC2) - Support - TheForeman