Add openshift, update k8s, istio, helm, etc

[BarDweller]

This PR adds support for

• openshift via crc, (detect crc, and enable use of 'routes' over ingress, and disable istio)
• updates our k8s yamls to work with recent k8s, (various namespace/syntax changes)
• updates our istio handling to use recent istio, (istio now installable using istioctl, no kubernetes yaml in install dir)
• updates our helm handling to support recent helm, (v3 onwards does not require tiller)
• adds support for the new 2nd external domain required for the new auth (https://github.com/gameontext/gameon-auth/pull/40)
• updates the couchdb image from 2.2 to 2.3.1, as 2.2 doesn't run as non-root, but 2.3.1 will.
• moves docker from using 127.0.0.1 to using gameon.127.0.0.1.xip.io

This PR removes the cluster ip/netmask configuration value previously used by the k8s-function script.

This change is 

[BarDweller]

Ok.. this one is ready for @ebullient testing/review...

It should work as-is with the existing lastgood containers with docker/minikube/helm/istio whatever..

I've also tested the ubi-base-image / allow-non-root containers with this PR and all is still good there.

The last remaining PR in draft is Auth, because I need to add twitter auth to it before it will be equivalent. I have however tested the new auth impl with docker/minikube/helm/istio whatever.

Oddly.. I haven't (yet) verified this PR works with crc, I will revisit that after your review, and fix anything needed as a separate PR. it should work.. or at least be exceedingly close.