message: logger: change default log level to info
  Closes:
diff: @@ -86,7 +86,7 @@ impl LibraLoggerBuilder {
  pub fn new() -> Self {
  Self {
  channel_size: CHANNEL_SIZE,
  - level: Level::Debug,
  + level: Level::Info,
  address: None,
  printer: Some(Box::new(StderrWriter)),
  is_async: false,
  