Using the :latest localstack, attempts to delete an SQS queue fail with the following error logged to the console.

```localstack_1                          | 2020-02-11T19:04:08:ERROR:localstack.services.generic_proxy: Error forwarding request: 'Attribute.1.Value' Traceback (most recent call last):
localstack_1                          |   File "/opt/code/localstack/localstack/services/generic_proxy.py", line 248, in forward
localstack_1                          |     path=path, data=data, headers=forward_headers)
localstack_1                          |   File "/opt/code/localstack/.venv/lib/python3.7/site-packages/localstack_ext/services/sqs/sqs_extended.py", line 30, in forward_request
localstack_1                          |   File "/opt/code/localstack/localstack/services/sqs/sqs_listener.py", line 60, in forward_request
localstack_1                          |     self._set_queue_attributes(queue_url, req_data)
localstack_1                          |   File "/opt/code/localstack/.venv/lib/python3.7/site-packages/localstack_ext/services/sqs/sqs_extended.py", line 73, in _set_queue_attributes
localstack_1                          |   File "/opt/code/localstack/localstack/services/sqs/sqs_listener.py", line 275, in _set_queue_attributes
localstack_1                          |     attrs = self._format_attributes(req_data)
localstack_1                          |   File "/opt/code/localstack/localstack/services/sqs/sqs_listener.py", line 237, in _format_attributes
localstack_1                          |     key_value = req_data[key2][0]
localstack_1                          | KeyError: 'Attribute.1.Value'```

I'm using terraform to manage my SQS queues and the deletion was triggered by renaming the queue.
req_data = clone(req_data)
        orig_types = {}
        for key, entry in dict(req_data).items():
            
            
            
            if key.endswith('DataType'):
                parts = entry[0].split('.')
                if len(parts) > 2:
                    short_type_name = parts[0]
                    full_type_name = req_data[key][0]
                    attr_num = key.split('.')[1]
                    attr_name = req_data['MessageAttribute.%s.Name' % attr_num][0]
                    orig_types[attr_name] = full_type_name
                    req_data[key] = [short_type_name]
                    if full_type_name not in TRANSPORT_TYPE_ENCODINGS:
                        TRANSPORT_TYPE_ENCODINGS[full_type_name] = TRANSPORT_TYPE_ENCODINGS[short_type_name]
        moto_message = Message('dummy_msg_id', 'dummy_body')
        moto_message.message_attributes = parse_message_attributes(req_data)
        for key, data_type in orig_types.items():
            moto_message.message_attributes[key]['data_type'] = data_type
        message_attr_hash = moto_message.attribute_md5
        return message_attr_hash
    
    
    
    
    
    def _format_attributes(self, req_data):