helm chart doesn't provide option to set up statefulset's volumeClaimTemplate

[camaeel]

Preflight Checklist

• [X] I have searched the issue tracker for an issue that matches the one I want to file, without success.
• [X] I agree to follow the Code of Conduct.

Problem Description

Helm chart doesn't provide option to set up statefulset's volumeClaimTemplate. This blocks completely usage of internal raft storage in HA mode with volumes provisioned dynamically by CSI.

Proposed Solution

Add in helmChart option to define persistence storage through volumeClaimTemplates and remove pvc.yaml (or leave it as fallback option)

Alternatives Considered

Switch to HC vault helm chart with additional sidecar container with bank-vaults for unsealing

Additional Information

No response

[ramizpolic]

Thanks for raising this @camaeel! If you have some extra time to create a PR for this, should be easy to patch but very valuable. Let us know so we can plan it out.