#8947 implemented support for the If-Match and If-None-Match headers for S3 PUT
Object requests; however, this support did not extend to multi-part copy and
upload requests. These headers are implemented via inclusion in the
CompleteMultipartUpload request.
This updates the auto generated code also which was needed for multipart copy.
SDK v2 conversion
Changes
- `--s3-sts-endpoint` is no longer supported
- `--s3-use-unsigned-payload` to control use of trailer checksums (needed for non AWS)