The CDN repositories require client side SSL certificates, it would have
to be specified in httpd configuration which is technically possible but
in practise it is more troubles than benefits.
It is similar case for the RH internal repositories, there is a new
issue every time we enable the test with them.
Stop wasting dev&qe time and disable the test for anything but rpmrepo
snapshots. It is better to have it running at least for few distros than
to have it disabled globally.
Also display logs for the HTTP proxy to see if there were any errors.
7c4172e8e3