Add example helm chart.
Per last meeting, I cleaned up our internal charts, added all dns env vars, and provided it as an example to fix #16. I still need some testing to verify, but at least dry-run upgrades seems correct. The 0.4.0 image is not available because of #60, but we use a custom registry anyhow, so the values are overwritten in deployment.
I have no experience with helm, could someone that has used helm review this ?
If we can resolve #60, I can submit this directly to the official k8s chart repo: https://github.com/kubernetes/charts. It will get a fine comb review, but that's not feasible until this is a deployable chart (and I rather avoid switching it to my own docker registry).
@luna-duclos I can review this when #60 is solved, do you have a plan to push this tag?
@nanliu please add the rbac rules to this chart