Config LWRP fails with bad file create

[ongmingyang]

Chef calls the load_current_resource method in the config provider to determine the current state of the node. This method throws an exception if the resource is malformed (see: https://github.com/chrisroberts/elecksee/blob/master/lib/elecksee/lxc_file_config.rb#L129). In other words, the code exits before chef is able to repair the malformed resource to the correct state. Then a single misconfiguration or a bad file create would mean any recipe using this LWRP might never work again. This could be potentially problematic.