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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try:
        with open(os.devnull, 'w') as devnull:
            subprocess.check_output('docker ps', stderr=devnull, shell=True)
        return True
    except Exception:
        return False
def is_linux():
    try:
        out = subprocess.check_output('uname -a', shell=True)
        out = out.decode('utf-8') if isinstance(out, six.binary_type) else out
        return 'Linux' in out
    except subprocess.CalledProcessError:
        return False
LAMBDA_EXECUTOR = os.environ.get('LAMBDA_EXECUTOR', '').strip()
if not LAMBDA_EXECUTOR:
    LAMBDA_EXECUTOR = 'docker'
    if not has_docker():
        LAMBDA_EXECUTOR = 'local'
LAMBDA_FALLBACK_URL = os.environ.get('LAMBDA_FALLBACK_URL', '').strip()
CONFIG_ENV_VARS = ['SERVICES', 'HOSTNAME', 'HOSTNAME_EXTERNAL', 'LOCALSTACK_HOSTNAME', 'LAMBDA_FALLBACK_URL',
                   'LAMBDA_EXECUTOR', 'LAMBDA_REMOTE_DOCKER', 'LAMBDA_DOCKER_NETWORK', 'USE_SSL', 'DEBUG',
                   'KINESIS_ERROR_PROBABILITY', 'DYNAMODB_ERROR_PROBABILITY', 'PORT_WEB_UI', 'START_WEB',
                   'DOCKER_BRIDGE_IP', 'DEFAULT_REGION', 'LAMBDA_JAVA_OPTS', 'LOCALSTACK_API_KEY']
for key, value in six.iteritems(DEFAULT_SERVICE_PORTS):
    clean_key = key.upper().replace('-', '_')
    CONFIG_ENV_VARS += [clean_key + '_BACKEND', clean_key + '_PORT', clean_key + '_PORT_EXTERNAL']
CONFIG_ENV_VARS += ['LOCALSTACK_' + v for v in CONFIG_ENV_VARS]
def ping(host):