Add Notification, Application Service resources

[junho100]

Category

• [x] New feature
• [ ] Bug fix
• [ ] Improvement
• [ ] Refactor
• [ ] etc

Description

• api gateway (api key, service, usage plan)

• email (category, tag, template)

• push (tag, token)

• add schema properties for paas service request (service-wide secret value)

  

static asset PR : https://github.com/cloudforet-io/static-assets/pull/2

Known issue

[junho100]

I will develop transit hub resource next.

[choonho]

Merge first. For cloud service types, one of key information is app_key per services.

Let's make documentation for developer or user.

For example. https://github.com/cloudforet-io/plugin-aws-cloud-service-inven-collector/blob/master/docs/ko/GUIDE.md