Helm: Default busybox init container does not reference .Values.envFromSecrets

[martimors]

A clear and concise description of what the bug is.

How to reproduce the bug

1. Specify a custom externally managed secret in .Values.envFromSecrets
2. helm install
3. Observe that the busybox container init scripts cannot find the env variable you wanted to give it

Expected results

The secrets should be available here as in all other containers by default

Actual results

In my case, the netcat call failed because the DB host could not be found

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

It could be a bit finnicky to do because the default script only exists in valyes.yml, thus using if/else would cause a circular dependency. It would therefore involve moving the default init container into _helpers.tpl. What do you think, is it worth the effort and complexity? I don't mind implementing it myself but would love some community feedback before I start.