Fix schema of list hypervisors API

Nova "list hypervisors" API returns like the following response which
includes "status" and "state",

{
  "hypervisors": [
    {
      "status": "enabled",
      "state": "up",
      "id": 1,
      "hypervisor_hostname": "devstack-trusty-948085"
    }
  ]
}

but its schema doesn't contain them.
So this patch adds them into the schema.

Change-Id: Ibfd905b8df10e5ff737f0f00a96de989a24c98aa
1 file changed