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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import psutil
        if not self.process:
            LOG.warning("No process found for command '%s'" % self.cmd)
            return
        parent_pid = self.process.pid
        try:
            parent = psutil.Process(parent_pid)
            for child in parent.children(recursive=True):
                child.kill()
            parent.kill()
            self.process = None
        except Exception:
            if not quiet:
                LOG.warning('Unable to kill process with pid %s' % parent_pid)
class JsonObject(object):
    """ Generic JSON serializable object for simplified subclassing """
    def to_json(self, indent=None):
        return json.dumps(self,
            default=lambda o: ((float(o) if o % 1 > 0 else int(o))
                if isinstance(o, decimal.Decimal) else o.__dict__),
            sort_keys=True, indent=indent)
    def apply_json(self, j):