With today's update this `serverless.yml` no longer deploys:

```yaml
service: "localtest"

provider:
  name: "aws"
  runtime: "nodejs10.x"

functions:
  hello:
    handler: "handler.hello"
    events:
    - http:
        path: "/"
        method: "get"
        integration: "lambda-proxy"

plugins:
  - "serverless-localstack"

custom:
  localstack:
    stages:
      - "local"
```

The error on the localstack end seems to be that it cannot create `ApiGateway::RestApi` type resources:
```
2019-10-24T09:10:41:DEBUG:localstack.utils.cloudformation.template_deployer: Deploying resource type "ApiGateway::RestApi" id "ApiGatewayRestApi"
2019-10-24T09:10:41:DEBUG:localstack.utils.cloudformation.template_deployer: Request for creating resource type "ApiGateway::RestApi": create_rest_api {'name': 'local-localtest'}
2019-10-24T09:10:41:ERROR:localstack.services.cloudformation.cloudformation_starter: Unable to parse and create resource "ApiGatewayRestApi": argument of type 'NoneType' is not iterable
```

This is followed by repeated `TypeError` and then `KeyError`.
self.run_forward_to_fallback_url('%s://localhost:%s' % (get_service_protocol(), local_port))
        items_after = len(records)
        self.assertEqual(items_after, items_before + 3)
        proxy.stop()
    def run_forward_to_fallback_url(self, url, num_requests=3):
        lambda_client = aws_stack.connect_to_service('lambda')
        config.LAMBDA_FALLBACK_URL = url
        try:
            for i in range(num_requests):
                lambda_client.invoke(FunctionName='non-existing-lambda-%s' % i,
                    Payload=b'{}', InvocationType='RequestResponse')
        finally:
            config.LAMBDA_FALLBACK_URL = ''
class TestPythonRuntimes(LambdaTestBase):
    @classmethod
    def setUpClass(cls):
        cls.lambda_client = aws_stack.connect_to_service('lambda')
        cls.s3_client = aws_stack.connect_to_service('s3')
        zip_file = testutil.create_lambda_archive(
            load_file(TEST_LAMBDA_PYTHON),
            get_content=True,
            libs=TEST_LAMBDA_LIBS,
            runtime=LAMBDA_RUNTIME_PYTHON27
        )
        testutil.create_lambda_function(
            func_name=TEST_LAMBDA_NAME_PY,
            zip_file=zip_file,
            runtime=LAMBDA_RUNTIME_PYTHON27
        )
    @classmethod