InfluxDB 2.0: The /ready endpoint doesn't satisfy the swagger schema [area/api]

[bednar]

The /ready endpoint is in swagger defined as:

 /ready:
    get:
      tags:
        - Ready
      summary: Get the readiness of a instance at startup. Allow us to confirm the instance is prepared to accept requests.
      parameters:
        - $ref: '#/components/parameters/TraceSpan'
      responses:
        '200':
          description: the instance is ready
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Check"
        '503':
          description: the instance is not ready yet
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Check"
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"

but the HTTP response is completely different and isn't parsable to Check schema:

-> GET 
-> http://127.0.0.1:9999/ready

<- 200 
<- OK
<- {
    "status": "ready",
    "started": "2019-03-12T12:20:17.798671806Z",
    "up": "26m14.504225814s"
}