logArgs not logging properly

[ycsung]

I setup the daemon and used logArgs as a test plugin as suggested. I noticed that nothing was being logged to the plugin.logArgs file (it was created by contained no log message). I found that it was necessary to add this line

    self._logger.setLevel(self._engine.config.getLogLevel())

at the end of Callback.init() to make the logging module write to the log file.

I don't totally understand why since the logger's effective log level is 10 already. But there it is.