modify load_dataset to handle s3/s3a when cloud='aws' (#10527)
modify load_dataset to handle s3/s3a when cloud='aws' (#10527)


hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail