Provide deterministic object names by default

[yuvipanda]

The default chart that helm create creates puts the name of the release in every single object. This is not only verbose, but actually problematic in multiple ways. The biggest is that we now have to find the IP of the NFS service manually, and then set it in config for each deployment. If this was predictably called something else (like say home-nfs), we could simply set that once.

helm create does this for historical reasons (due to wanting to support multiple installations of the same chart in the same namespace under multiple releases). This however has too many drawbacks for us.

z2jh does not follow this pattern, and neither does binderhub. This chart should also provide deterministic object names.

I think this is doable with the fullnameOverride and nameOverride values, but needs a little digging.

[yuvipanda]

This is potentially a breaking change so the earlier we do it the better :)