We are having an issue with the latest image of localstack (bc991b0bc3ce).
While creating an SQS and setting parameters we experience the following error:

```
localstack_1        | 2019-09-09T10:46:22:ERROR:localstack.services.generic_proxy: Error forwarding request: 'QueueUrl' Traceback (most recent call last):
localstack_1        |   File "/opt/code/localstack/localstack/services/generic_proxy.py", line 234, in forward
localstack_1        |     path=path, data=data, headers=forward_headers)
localstack_1        |   File "/opt/code/localstack/localstack/services/sqs/sqs_listener.py", line 53, in forward_request
localstack_1        |     self._set_queue_attributes(req_data)
localstack_1        |   File "/opt/code/localstack/localstack/services/sqs/sqs_listener.py", line 245, in _set_queue_attributes
localstack_1        |     queue_url = req_data['QueueUrl'][0]
localstack_1        | KeyError: 'QueueUrl'
```

From the logs I guess the `QueueUrl` is expected and it's not there. We don't see this behaviour in the last version (0.10.2).

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""" Default proxy listener that intercepts requests to retrieve or update config variables. """
    def forward_request(self, method, path, data, headers):
        if path != constants.CONFIG_UPDATE_PATH or method != 'POST':
            return True
        response = Response()
        data = json.loads(data)
        variable = data.get('variable', '')
        response._content = '{}'
        response.status_code = 200
        if not re.match(r'^[_a-zA-Z0-9]+$', variable):
            response.status_code = 400
            return response
        new_value = data.get('value')
        update_config_variable(variable, new_value)
        value = getattr(config, variable, None)
        result = {'variable': variable, 'value': value}
        response._content = json.dumps(result)
        return response
GenericProxyHandler.DEFAULT_LISTENERS.append(ConfigUpdateProxyListener())
def start_apigateway(port=None, asynchronous=False, update_listener=None):