Hi,

I am using below payload for PutBucketLogging api and getting MalformedXML error in response. I have checked it with real AWS and it is working perfectly fine. Am I missing something or this needs a fix in localstack?

`"LoggingEnabled": {
            "TargetBucket": "test_bucket_name",
            "TargetPrefix": "log",
            "TargetGrants": [
                {
                    "Grantee": {
                        "URI": "http://acs.amazonaws.com/groups/s3/LogDelivery",
                        "Type": "Group",
                    },
                    "Permission": "WRITE",
                },
                {
                    "Grantee": {
                        "URI": "http://acs.amazonaws.com/groups/s3/LogDelivery",
                        "Type": "Group",
                    },
                    "Permission": "READ_ACP",
                },
            ],
        }
 `
snapshot.add_transformer(snapshot.transform.s3_api())
        # Ob
        # ht
        # put 
        _key = "key-with-metadata"
        metadata = {"TEST_META_1": "foo", "__meta_2": "bar"}
        aws_client.s3.put_(Bucket=s3_bucket, Key=_key, Metadata=metadata, Body="foo")
        metadata_saved = aws_client.s3.head_(Bucket=s3_bucket, Key=_key)["Metadata"]
        snapshot.match("head-", metadata_saved)
        # no
        assert metadata_saved == {"test_meta_1": "foo", "__meta_2": "bar"}
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider, paths=["$..VersionId", "$..ContentLanguage"]
    )
    def test_upload_file_multipart(self, s3_bucket, tmpdir, snapshot, aws_client):