[kuberay serve] 'request_timeout_s' not support for ray serve deployment in k8s

Ray Clusters Kubernetes
1

Since ray serve support ‘request_timeout_s’ option:
https://docs.ray.io/en/latest/serve/advanced-guides/performance.html#id5

However, when I deploy a k8s yaml as following, it is not work.

rayStartParams:
  block: 'true'
  num-cpus: '2'
  request-timeout-s: '1'

or 

rayStartParams:
  block: 'true'
  num-cpus: '2'
  http-options: |
    request-timeout-s: '1'

Is it support this config for current version of kuberay?
My kuberay version is 0.6.1

Thank you so much!