message: default sync mode with dev net.
diff: @@ -41,9 +41,13 @@ impl ConfigModule for SyncConfig {
  }
  }
  - fn load(&mut self, _base: &BaseConfig, opt: &StarcoinOpt) -> Result<()> {
  - info!("sync_mode : {:?}", opt.sync_mode);
  - self.sync_mode = opt.sync_mode.clone();
  + fn load(&mut self, base: &BaseConfig, opt: &StarcoinOpt) -> Result<()> {
  + self.sync_mode = if base.net.is_dev() {
  + SyncMode::FULL
  + } else {
  + opt.sync_mode.clone()
  + };
  + info!("sync mode : {:?} : {:?}", opt.sync_mode, self.sync_mode);
  Ok(())
  }
  }
  