dal2: Implement s3 support

[Xuanwo]

Part of #3677

TODO

• dal2: Add s3 support layout #3775
• dal2/s3: Implement unit tests #3802
• dal2: Implement s3 basic operations #3821
• Add integration tests upon minio

Waiting

• SDK needs to support path style
• SDK needs to support signature v2

[Xuanwo]

not sure if the signature of method enable_path_style is composable with the finish method, e.g. builder.enable_path_style().finish()?

Originally posted by @dantengsky in #3775 (comment)

[Xuanwo]

@dantengsky, I think this style works. I will add a test case for Builder to make sure they works as expected.