### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

In AWS, DescribeSubnet Response returns:
```
<?xml version="1.0" encoding="UTF-8"?>\n
    <Response>
        <Errors>
            <Error>
                <Code>InvalidSubnetID.NotFound</Code>
                <Message>The subnet ID \'test\' does not exist</Message>
            </Error>
        </Errors>
    <RequestID>f6d041c1-1c96-4720-af30-77745504e2ba</RequestID>
</Response>
```

whereas localstack returns:
```
<?xml version=\'1.0\' encoding=\'utf-8\'?>\n<Errors xmlns="http://ec2.amazonaws.com/doc/2016-11-15">
    <Error>
        <Code>InvalidSubnetID.NotFound</Code>
        <Message>aaThe subnet ID \'vpc-test\' does not exist</Message>
    </Error>
    <RequestID>EADJHWMM796CI5FT10XGFMGOXIPCBAHBWINMV0HR6SKBRODGCU5J</RequestID>
</Errors>

```

### Expected Behavior

It should return correct response structure. It causes terraform to complain.

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    make start

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

     awslocal ec2 describe-subnets --subnet-ids vpc-test --debug


### Environment

```markdown
- OS: M1 MacOS
- LocalStack: 1.0.2.dev
```


### Anything else?

Probably `call_moto` function in `localstack/services/moto.py` is changing the error code structure.
# and that the Error tag is in an enclosing Errors tag.
        attr = (
            {"xmlns": operation_model.metadata.get("xmlNamespace")}
            if "xmlNamespace" in operation_model.metadata
            else None
        )
        root = ETree.Element("Errors", attr)
        error_tag = ETree.SubElement(root, "Error")
        self._add_error_tags(error, error_tag)
        request_id = ETree.SubElement(root, "RequestID")
        request_id.text = gen_amzn_requestid_long()
        response.set_response(self._encode_payload(self._xml_to_string(root)))
    def _prepare_additiin_xml(setional[ET:
         shape, t
        #  level
        root) > 0:
            output_node = root[0]
            ild in output_node:
                root.append(child)
            root.remove(output_node)
         the specs)
        # For the ec2 and the query protocol, the root cannot be None at this time.
        request_id = ETree.SubElement(root, "requestId")
        request_id.text = gen_amzn_requestid_long()
class JSONResponseSerializer(ResponseSerializer):
    """
    The ``JSONResponseSerializer`` is responsible for the serialization of responses from services with the ``json``
    protocol. It implements the JSON response body serialization, which is also used by the
    ``RestJSONResponseSerializer``.
    **Experimental:** This serializer is still experimental.