Remove 'require augeas' (#4396)
Because the puppet 'require' keyword actually instantiates a class, having 'require augeas' in base.pp means that you cannot instantiate the augeas class anywhere else in your manifests, for example with some optional parameters to the class. If you do, you will get a duplicate definition error. The README already says that the augeas module is required. It seems better that this is managed outside of the module, allowing for class parameter flexibility.