* first cut at redis
* fix startup dependencies on redis
* kombu cleanup - fail silently
* mypy
* add redis_host environment override
* update REDIS_HOST env var in docker-compose.dev.yml
* update the rest of the docker files
* update contributing guide
* renaming cache to cache_volume
* add redis password to various deployments
* try setting up pr testing for helm
* fix indent
* hopefully this release version actually exists
* fix command line option to --chart-dirs
* fetch-depth 0
* edit values.yaml
* try setting ct working directory
* bypass testing only on change for now
* move files and lint them
* update helm testing
* some issues suggest using --config works
* add vespa repo
* add postgresql repo
* increase timeout
* try amd64 runner
* fix redis password reference
* add comment to helm chart testing workflow
* rename helm testing workflow to disable it
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Co-authored-by: Richard Kuo <rkuo@rkuo.com>