Change appProtocol of gRPC from http to grpc or http2

[imaisos]

Preflight Checklist

• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for an issue that matches the one I want to file, without success.
• I am not looking for support or already pursued the available support channels without success.

Chart

dex

Version

0.20.0

Expected Behavior

Change helm template to modify appProtocol on grpc port from http to grpc so that health checks work correctly with istio or allow to modify appProtocol on values.

Actual Behavior

The current template does not allow to change the appProtocol and a health check between two different pods does not work correctly if istio is enabled and grpc's appProtocol is http.

Steps To Reproduce

1. Enable istio
2. Deploy dex helm chart
3. Try to make a health check between two pods to the grpc port with appProtocol: http.

Additional Information

No response

Values