sftp change upload chunk size smaill

@@ -95,10 +95,7 @@ class Deploy {
                     reject(err);
                 } else {
                     sftp.fastPut(self.localFile, self.remoteFile, {
-
-                        step: (total, chunk, all) => {
-                            //self._log(`     uploading: ${total}/${all}`);
-                        }
+                        chunkSize: 10240
                     }, (err) => {
                         if (err) {
                             reject(err);