Moving tilt to use helm instead of static yaml

[networkop]

TODO:

• [x] remove old test/kubernetes.yaml
• [x] check if ingress-nginx can be changed to helm
• [x] pin versions on all helm charts
• [x] rebase
• [x] README updates

[networkop]

@Kaezon can you give a quick overview? I wanted to merge this before I forget all about this PR.

[Kaezon]

Yes, sorry. I let this fall off my plate. I'll go back over it now.