[ZUN] Scaling of containers

I have integrated Zun service with my existing openstack setup and I am able to launch a container using Heat Template. I am facing issue in scaling up of these contaiiners? I already have Senlin being installed at my setup, but senlin is unable to scale the cluster of containers. Can you please suggest any alternative i can use in order to scale Zun Containers Thanks Anirudh Gupta