Fixes #35681: Use registration_url for RHSM and Pulp content URL
If specificed to foreman_proxy, the registration_url will be used to set the values of the RHSM URL and the Pulp content URL. This is only applied to situations where the Pulpcore is set up in mirror mode.
Related issues
Feature #35681: Add support to customize rhsm API URL and pulpcore content URL
Fixes #35681: Use registration_url for RHSM and Pulp content URL
If specificed to foreman_proxy, the registration_url will be used
to set the values of the RHSM URL and the Pulp content URL. This
is only applied to situations where the Pulpcore is set up in mirror
mode.