Upgrade to Helm V3

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https://helm.sh/docs/topics/v2_v3_migration/

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There is an official plugin that looks like it will make upgrading much easier:

https://helm.sh/blog/migrate-from-helm-v2-to-helm-v3/

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This also has a small shell script to test out converting our releases:

https://itnext.io/additional-tips-for-migrating-to-helm-3-304c9d50f1b4