# 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 = 'myBucket'
        self.s3_client.create_bucket(Bucket=bucket_name)
        self.s3_client.create_bucket(Bucket=bucket_name)
        self.s3_client.put_object(Bucket=bucket_name, Key='steve', Body=b'is awesome')
        try:
            self.s3_client.get_object(Bucket=bucket_name, Key='steve', Range='bytes=1024-4096')
        except ClientError as e:
            self.assertEqual(e.response['Error']['Code'], 'InvalidRange')
    def test_s3_multipart_upload_acls(self):
        bucket_name = 'test-bucket-%s' % short_uid()
        self.s3_client.create_bucket(Bucket=bucket_name, ACL='public-read')
        def check_permissions(key, expected_perms):
            grants = self.s3_client.get_object_acl(Bucket=bucket_name, Key=key)['Grants']
            grants = [g for g in grants if 'AllUsers' in g.get('Grantee', {}).get('URI', '')]
            self.assertEquals(len(grants), 1)
            permissions = grants[0]['Permission']
            permissions = permissions if isinstance(permissions, list) else [permissions]
            self.assertEquals(len(permissions), expected_perms)
        
        self.s3_client.put_object(Bucket=bucket_name, Key='acl-key0', Body='something')
        check_permissions('acl-key0', 1)
        self._perform_multipart_upload(bucket=bucket_name, key='acl-key1')
        check_permissions('acl-key1', 1)
        self._perform_multipart_upload(bucket=bucket_name, key='acl-key2', acl='public-read-write')
        check_permissions('acl-key2', 2)
    def test_s3_presigned_url_upload(self):