开启task_enable_coroutine

[wtry]

1. Tell us your software version How to know it?

   # PHP
   php -v
   # Swoole
   php --ri swoole
   # Laravel
   grep 'laravel/framework' composer.json
   # Lumen
   grep 'laravel/lumen-framework' composer.json

   Software	Version
   PHP	PHP 7.3.9
   Swoole	4.4.5
   Laravel/Lumen	6.0.4

2. Detail description about this issue(error/log)

   Swoole\Coroutine::create(): Unable to use async-io in task processes, please settask_enable_coroutineto true

[2019-09-25 21:01:24 ^87198.1] ERROR php_swoole_server_rshutdown (ERRNO 503): Fatal error: Uncaught ArgumentCountError: Too few arguments to function Hhxsv5\LaravelS\Swoole\Server::onTask(), 2 passed and exactly 4 expected in /Users/lan/Project/lumen/vendor/hhxsv5/laravel-s/src/Swoole/Server.php:282

3. Give us a reproducible code block and steps

   //TODO: Your code
   ![image](https://user-images.githubusercontent.com/13792519/65603254-eab1e300-dfd7-11e9-95bd-f56fa8312a67.png)

[hhxsv5]

除了自定义进程，其他地方不能使用协程，请参考协程。