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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if action == 'GetQueueAttributes':
                content_str = self._add_queue_attributes(req_data, content_str)
            
            if action in ('CreateQueue', 'GetQueueUrl', 'ListQueues', 'GetQueueAttributes'):
                if config.USE_SSL and '<QueueUrl>http://' in content_str:
                    
                    content_str = re.sub(r'<QueueUrl>\s*http://', r'<QueueUrl>https://', content_str)
                
                external_port = SQS_PORT_EXTERNAL or get_external_port(headers, request_handler)
                content_str = re.sub(r'<QueueUrl>\s*([a-z]+)://[^<]*:([0-9]+)/([^<]*)\s*</QueueUrl>',
                    r'<QueueUrl>\1://%s:%s/\3</QueueUrl>' % (HOSTNAME_EXTERNAL, external_port), content_str)
                
                content_str = re.sub(r'<([a-zA-Z0-9]+)>\s*arn:aws:sqs:elasticmq:([^<]+)</([a-zA-Z0-9]+)>',
                    r'<\1>arn:aws:sqs:%s:\2</\3>' % (region_name), content_str)
            if content_str_original != content_str:
                
                new_response = Response()
                new_response.status_code = response.status_code
                new_response.headers = response.headers
                new_response._content = content_str
                new_response.headers['content-length'] = len(new_response._content)
                return new_response
            
            
            if action == 'TagQueue':
                new_response = Response()
                new_response.status_code = 200
                new_response._content = ("""
                    <?xml version="1.0"?>