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.
stderr=subprocess.STDOUT, outfile=None, env_vars=None, inherit_cwd=False,
        inherit_env=True, tty=False):
    
    
    if six.PY2:
        import subprocess32 as subprocess
    else:
        import subprocess
    env_dict = os.environ.copy() if inherit_env else {}
    if env_vars:
        env_dict.update(env_vars)
    if tty:
        asynchronous = True
        stdin = True
    try:
        cwd = os.getcwd() if inherit_cwd else None
        if not asynchronous:
            if stdin:
                return subprocess.check_output(cmd, shell=True, stderr=stderr, env=env_dict,
                    stdin=subprocess.PIPE, cwd=cwd)
            output = subprocess.check_output(cmd, shell=True, stderr=stderr, env=env_dict, cwd=cwd)
            return output.decode(config.DEFAULT_ENCODING)
        
        with mutex_popen:
            stdin_arg = subprocess.PIPE if stdin else None
            stdout_arg = open(outfile, 'ab') if isinstance(outfile, six.string_types) else outfile
            stderr_arg = stderr
            if tty: