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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def __init__(self, port, forward_url=None, ssl=False, host=None, update_listener=None, quiet=False, params={}):
        FuncThread.__init__(self, self.run_cmd, params, quiet=quiet)
        self.httpd = None
        self.port = port
        self.ssl = ssl
        self.quiet = quiet
        if forward_url:
            if '://' not in forward_url:
                forward_url = 'http://%s' % forward_url
            forward_url = forward_url.rstrip('/')
        self.forward_url = forward_url
        self.update_listener = update_listener
        self.server_stopped = False
        
        self.protocol_version = params.get('protocol_version') or 'HTTP/1.1'
        self.listen_host = host or ''
    def run_cmd(self, params):
        try:
            self.httpd = ThreadedHTTPServer((self.listen_host, self.port), GenericProxyHandler)
            if self.ssl:
                
                combined_file, cert_file_name, key_file_name = GenericProxy.create_ssl_cert(serial_number=self.port)
                self.httpd.socket = ssl.wrap_socket(self.httpd.socket,
                    server_side=True, certfile=combined_file)
            self.httpd.my_object = self
            self.httpd.serve_forever()
        except Exception as e:
            if not self.quiet or not self.server_stopped:
                LOG.error('Exception running proxy on port %s: %s %s' % (self.port, e, traceback.format_exc()))
    def stop(self, quiet=False):