定时任务元数据 .cron.yml：可配置定时调用微服务中的action

[hotlong]

xxxx.cron.yml ，暂时考虑用代码定义，后期也可以在数据库中配置。

name: 定时请安
cronTime: '* * * * * *'
onTickAction: 'spaces.find'

• cronTime - [REQUIRED] - The time to fire off your job. This can be in the form of cron syntax or a JS Date object.
• onTickAction - [REQUIRED] - The actionName to fire at the specified time.

https://github.com/kelektiv/node-cron