# Type of request: This is a ...
[ ] bug report
[x] feature request

# Detailed description
As a Developer,
I want to be able to simulate BadDigest and InvalidDigest errors,
So that I can test the error handling logic

## Expected behavior
https://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
BadDigest: The Content-MD5 you specified did not match what we received.
InvalidDigest: The Content-MD5 you specified is not valid.

## Actual behavior
localstack returns InvalidDigest when MD5 does not match payload.


bucket_name = 'test-bucket-%s' % short_uid()
        self.s3_client.create_bucket(Bucket=bucket_name)
        
        hashes = {
            '__invalid__': 'InvalidDigest',
            '000': 'InvalidDigest',
            'MTIz': 'BadDigest'  
        }
        for hash, error in hashes.items():
            with self.assertRaises(Exception) as ctx:
                self.s3_client.put_object(Bucket=bucket_name, Key='test-key',
                    Body='something', ContentMD5=hash)
            self.assertIn(error, str(ctx.exception))
        
        self.s3_client.delete_bucket(Bucket=bucket_name)
    def test_s3_upload_download_gzip(self):