sys.config - added lager_file_backend_config variable (#586)
sys.config - added lager_file_backend_config variable (#586)

* sys.config - added lager_file_backend_config variable
* sys.config - formatter config ] 
* removed extra spaces #586
K2InformaticsGmbH/dderl,K2InformaticsGmbH/dderl,K2InformaticsGmbH/dderl,K2InformaticsGmbH/dderl