add envFrom for env from secrets

[Birddude1230]

• Adds envFrom support for values. Personal use case is for secrets created from vault for things like OAUTH_CLIENT_SECRET, while still keeping most of the config in the helm chart.
• Bumps version to 3.2.0

Hope I'm not missing some simple way to merge the config secret and creds secret.

Thanks!

[halkeye]

I kinda feel like #33 is a bit more sustainable