message: [safety-rules] Add logging init to main
  Verified by placing a hello, world statement after init and using a
  default generated node.config from the node.config builder.
  Closes:
  Approved by: mgorven
diff: @@ -22,6 +22,12 @@ fn main() {
  process::exit(1);
  });
  + libra_logger::Logger::new()
  + .channel_size(config.logger.chan_size)
  + .is_async(config.logger.is_async)
  + .level(config.logger.level)
  + .init();
  +
  let mut service = Process::new(config);
  service.start();
  }
  