Use lctl get_param to collect a selection of parameters into a
            file.

def get_params(self, name, param_list):
        '''Use lctl get_param to collect a selection of parameters into a
            file.

        '''
        self.add_cmd_output("lctl get_param %s" % " ".join(param_list),
                            suggest_filename="params-%s" % name,
                            stderr=False)