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.
try:
        from localstack.services import infra
        assert infra
    except Exception:
        install_dependencies()
def install_dependencies():
    
    root_folder = os.path.join(os.path.dirname(os.path.realpath(__file__)), '..', '..')
    reqs_file = os.path.join(root_folder, 'requirements.txt')
    reqs_copy_file = os.path.join(root_folder, 'localstack', 'requirements.copy.txt')
    if not os.path.exists(reqs_copy_file):
        shutil.copy(reqs_file, reqs_copy_file)
    with open(reqs_copy_file) as f:
        requirements = f.read()
    install_requires = []
    for line in re.split('\n', requirements):
        if line and line[0] != '#':
            if BASIC_LIB_MARKER not in line and IGNORED_LIB_MARKER not in line:
                line = line.split(' #')[0].strip()
                install_requires.append(line)
    LOG.info('Lazily installing missing pip dependencies, this could take a while: %s' %
             ', '.join(install_requires))
    args = ['install'] + install_requires
    return run_pip_main(args)
def run_pip_main(args):