Multipart Upload request support SSE CPK

[kaiz-io]

First github issue ever so here we go. Be gentle.

I am experiencing an issue that seems very similar to the ruby version of this sdk that was reported: aws/aws-sdk-ruby#1084

I looked at https://github.com/aws/aws-sdk-go/blob/master/service/s3/api.go#L311 to confirm, but I am just getting into writing in go so I am not quite sure that code is the smoking gun. But it appears to be missing SSE CPK data.

params := &s3manager.UploadInput{
		Bucket:               aws.String(r.BucketName),
		Key:                  aws.String(r.Key),
		Body:                 reader,
		SSECustomerAlgorithm: aws.String("AES256"),
		SSECustomerKey:       aws.String(unEncryptedKey),
		Tagging:              aws.String(v.Encode()),
	}
	resp, err := uploader.Upload(params)
	if err != nil {
		log.Fatal(err)
	}

Error Output:

2017/02/22 14:24:37 MultipartUpload: upload multipart failed
        upload id: <removed for github>
caused by: InvalidRequest: The multipart upload initiate requested encryption. Subsequent part requests must include the appropriate encryption parameters.
        status code: 400, request id: <removed for github>

[xibz]

Hello @zkai, thank you for reaching out to us. I've gone ahead and submitted a PR, #1097, that fixes this. If you have any additional issues, please feel free to reach out to us.

[xibz]

@zkai, we just merged in #1097. If you have any issues with the latest changes, please let us know.