Update helm charts to support iks 1.17

[acmthinks]

I am unable to get bluecompute running on an iks 1.17 cluster

k8s APIs referenced in helm charts are deprecated

https://kubernetes.io/blog/2019/07/18/api-deprecations-in-1-16/

When installing bluecompute:
helm upgrade --install bluecompute ibmcase/bluecompute-ce
yields the following:
Error: unable to build kubernetes objects from release manifest: [unable to recognize "": no matches for kind "Deployment" in version "extensions/v1beta1", unable to recognize "": no matches for kind "Deployment" in version "apps/v1beta1", unable to recognize "": no matches for kind "StatefulSet" in version "apps/v1beta2", unable to recognize "": no matches for kind "StatefulSet" in version "apps/v1beta1"]