The $auth_conf_tmp line should be multiple lines for readability and
easier to read diffs when changes occur.

Double-indented blocks look wrong. Placing the opening bracket on its
own line fixes this.

params.pp and create_resources() are obsolete.

This module was converted to non-params.pp style puppetlabs#667, but was
reverted in puppetlabs#680. Using Hiera in modules and no params.pp are the
preferred styles these days.