Revert "Use RC repo"

Preparing for Foreman 1.2.0 release.

This reverts commit fbc77017e3d1e2d5f3201d7c15db95762da3f529.
Release v1.2.0
proxy registration - adding oauth params
Added package version parameter to allow the use of all pacakge->ensure
options.
Make reports and enc real puppetmaster parameters
Configuration in YAML

This patch moves configuration to /etc/puppet/foreman.yml. By moving the
configuration into a settings file, we can use external_node.rb and
foreman-report as plain files. It also makes foreman::puppetmaster
easier to use.

This is based on a patch by @frimik.