1. Fix random seed for trainer and init it at the first line of init
2. Add a regress test for fixed training
3. Change the dataset 'dureader_robust_qg' to 'DuReader_robust-QG'
4. Change some datasets from loading hf.datasets to loading msdataset.load
        Link: https://code.alibaba-inc.com/Ali-MaaS/MaaS-lib/codereview/10029509