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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SIGNAL_HANDLERS_SETUP = False
DEFAULT_BACKEND_HOST = '127.0.0.1'
LOG = logging.getLogger(os.path.basename(__file__))
SERVICE_PLUGINS = {}
class Plugin(object):
    def __init__(self, name, start, check=None, listener=None):
        self.plugin_name = name
        self.start_function = start
        self.listener = listener
        self.check_function = check
    def start(self, asynchronous):
        kwargs = {
            'asynchronous': asynchronous
        }
        if self.listener:
            kwargs['update_listener'] = self.listener
        return self.start_function(**kwargs)
    def check(self, expect_shutdown=False, print_error=False):
        if not self.check_function:
            return
        return self.check_function(expect_shutdown=expect_shutdown, print_error=print_error)
    def name(self):
        return self.plugin_name
def register_plugin(plugin):
    SERVICE_PLUGINS[plugin.name()] = plugin
def update_config_variable(variable, new_value):
    if new_value is not None:
        LOG.info('Updating value of config variable "%s": %s' % (variable, new_value))
        setattr(config, variable, new_value)
class ConfigUpdateProxyListener(ProxyListener):