#205: add more fields to be fetched from secret

[ArjunDandagi]

This PR:

• Allows more fields to be referenced from secretRef.

NOTE:

• please mention if anymore needs to be considered.

---

Important

Add support for fetching PostgreSQL and Redis configuration fields from Kubernetes secrets in Helm chart.

• Behavior:
  • Extend langfuse.getValueOrSecret usage in _helpers.tpl to support postgresql and redis fields: host, port, username, and database.
  • Add secret reference support for postgresql and redis configurations in values.yaml.
• Examples:
  • Add secret-refs-example.yaml to demonstrate using secretKeyRef for PostgreSQL and Redis configurations.
• Misc:
  • Update REDIS_CONNECTION_STRING logic in _helpers.tpl to handle secret references for host, port, and username.

^{This description was created by for f10a7bd. You can customize this summary. It will automatically update as commits are pushed.}

[CLAassistant]

All committers have signed the CLA.

[yonik-lr]

hey, can you consider adding langfuse.smtp.connectionUrl, as in #234 🙏

[tom-mav9]

Hey has this gone stale? We'd really appreciate this!