[Feature Request] Add support of authentication in webhooks

[To-om]

Request Type

[Feature Request]

Problem Description

Add authentication capability in webhook. A new optional auth setting is added in webhook endpoints:

notification {
  webhook {
    endpoints = [
      {
        name: local
        url: "http://127.0.0.1:5000/webhook"
        version: 0
        wsConfig: {}
        auth: {
          type: XXX
      }
    ]
  }
}

Supported methods are:

• basic "auth": { "type": "basic", "username": "foo", "password": "bar" }
• bearer "auth": { "type": "bearer", "key": "foobar" }
• key "auth": { "type": "bearer", "key": "foobar" }
• none (default) "auth": { "type": "none" }