Foreman » Installer

fixes #14455 - add rest_v3 smart proxy provider using OAuth gem

The new provider has fewer dependencies than rest_v2 (with
apipie-bindings), therefore it's easier to package the dependencies for
an AIO version of Puppet. puppet-agent-oauth will be provided by the...

Add foreman::providers to install provider dependencies

This will replace the package resource in foreman_proxy and help when
using the providers here outside of foreman_proxy.