FT-815 Change level to DEBUG for logger_root

[ErnestoLoma]

Generally we want to send log message info and above to the consoleHandler I.e. stdout and message with log level debug and above to fileHandler i.e. /tmp/debug.log. To accomplish this we set the log level of the consoleHander to INFO and the fileHandler DEBUG. Any logger defined in a module like main.py will inherit the level of logger_root as well as the handlers. The level of the logger determines which level of message are sent to a handler. The level of the logger on the handler determines which level of log message appear in the log associated with the handler. We set the level of logger_root to DEBUG so that messages with a level greater than DEBUG will be sent to handlers. Since the consoleHandler's level is set to INFO only log message with a level of info and above will go to the console. If we set the logger_root level to INFO then only log messages with the level of INFO and above would be sent to handlers. Consequently the message with the debug level would not be sent to any handler.s