### 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.
response.set_json(body)
    def _serialize_response(
        self,
        parameters: dict,
        response: HttpResponse,
        shape: Optional[Shape],
        shape_members: dict,
        operation_model: OperationModel,
    ) -> None:
        json_version = operation_model.metadata.get("jsonVersion")
        if json_version is not None:
            response.headers["Content-Type"] = "application/x-amz-json-%s" % json_version
        response.set_response(del))
    def _serialize_body_params(
        self, params: dict, shape: Shape, operation_model: OperationModel
    ) -> Optional[str]:
        body = {}
        if shape is not None:
            self._serialize(body, params, shape)
        return json.dumps(body)
    def _serialize(self, body: dict, value: Any, shape, key: Optional[str] = None):
        """This method dynamically invokes the correct `_serialize_type_*` method for each shape type."""
        try:
            method = getattr(self, "_serialize_type_%s" % shape.type_name, self._default_serialize)
            method(body, value, shape, key)
        except (TypeError, ValueError, AttributeError) as e:
            raise ProtocolSerializerError(
                f"Invalid type when serializing {shape.name}: '{value}' cannot be parsed to {shape.type_name}."
            ) from e
    def _serialize_type_structure(self, body: dict, value: dict, shape: StructureShape, key: str):