Gets a disaster recovery test, complete with service details

Example response

{
  "scenarioOverrides": {
    "failureFlag": {
      "labels": {
        "foo": [
          "bar",
          "baz"
        ]
      },
      "runtimeLabels": {
        "zones": [
          "us-west-1a",
          "us-west-1b"
        ]
      }
    }
  }
}