ec2 eu-central-1 support missing

please add eu-central-1 support for ec2.
simply adding a new Region does not work.

var EUCentral = Region{
        "eu-central-1",
        "https://ec2.eu-central-1.amazonaws.com",
        "https://s3.eu-cental-1.amazonaws.com",
        "",
        true,
        true,
        "https://sdb.eu-central-1.amazonaws.com",
        "https://sns.eu-central-1.amazonaws.com",
        "https://sqs.eu-central-1.amazonaws.com",
        "https://iam.amazonaws.com",
        SignV4Factory("eu-central-1"),
}

It returns a panic: The request must contain the parameter AWSAccessKeyId (MissingParameter)#

don't know if it is important for this, but
    ec2/ec2.go:147 ec2.Region.Sign
returns an error which is ignored:
   Could not retrieve a request date. Please provide one in either "x-amz-date", or "date".

providing a date with
   req.Header.Add("Date", timeNow().In(time.UTC).Format(time.RFC3339))
does result in an panic in aws/sign.go in payloadHash (...) => req.Body is nil there

providing an empty body does result in an error from amazon:
   AWS was not able to validate the provided access credentials (AuthFailure)