Operator 2.0 release candidate 1

Operator is now installed via Helm charts, replacing the earlier scripts. The operator now supports domain home on persistent volume or in Docker image use cases, which required a redesign of the Domain schema. Customers can override domain configuration using configuration override templates. Load balancers and Ingress can now be independently configured. WebLogic logs can be directed to a persistent volume or WebLogic server console out can be directed to the pod log. Added lifecycle support for servers and significantly more configurability for generated pods. The final v2.0 release will be initial release where the operator team intends to provide backward compatability as part of future releases.