add batch interval for saving model

nichongjia-2007

2023-03-23 37c45ee8d7e4db18d95677c203b3432f3e6dde80

 setup.py

@@ -41,6 +41,8 @@
        # PAI
        "oss2",
        "kaldi-native-fbank",
        # timestamp
        "edit-distance"
    ],
    # train: The modules invoked when training only.
    "train": [