PHP 5.6 is not in RHEL repositories, and there is no code to add the [remi-php56](http://blog.famillecollet.com/post/2014/03/02/New-repository-remi-php56) repository in the puppet manifests.
PHP 5.6 is not in RHEL repositories, and there is no code to add the remi-php56 repository in the puppet manifests.