Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1892752

Description of problem:

Satellite without direct access to internet is unable to get rss notifications because the job ignores any proxy configurations.

Version-Release number of selected component (if applicable):

How reproducible: Always

Steps to Reproduce:
1. Configure a default proxy on Satellite
2. Configure http_proxy

1. hammer settings set --name http_proxy --value http://myproxy:3128
   ~~~
   3. Wait for the next execution and monitor the network traffic.
   Optionally, run the task manually:

~_{~
foreman-rake rss:create_notifications}
~~

Actual results:
Foreman tries to go directly to the URL configured, ignoring proxy.

Expected results:
Foreman should use one of the defined proxies.

Additional info: