Helm Chart Upgrade Tests

[bwagner5]

Tell us about your request

There should be Helm upgrade tests on chart changes to ensure that charts can be cleanly upgraded when we do releases.

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?

The helm charts are currently not tested very extensively. For example, in PR #1001 a seemingly innocent change introduced a backwards incompatible change to the chart that would cause chart upgrades to fail on some resources.

Are you currently working around this issue?
Manual testing caught this specific issue.

Additional context
Anything else we should know?

N/A

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[tzneal]

Completed now as part of the E2E tests