Support for multipart upload in s3 http engine

[alex-katz]

MPU in S3 http engine
Hello,
I'm looking for support for MPU in s3 http engine implementation. Based on what I can see in the traffic capture, there is currently no such mechanism. Meaning that the entire object is uploaded in a single PUT request.

Amazon suggests that all the objects which size exceeds 100Mb should not be uploaded in a single request. There is a bit more information about the mechanism: https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpuoverview.html.
Not sure however it should be forced for all objects of a specific size but instead better to have it configurable for the specific job.