Update container port from 3000 to 50051 in sample k8s config

[dasanind]

Signed-off-by: Anindita Das dasanuiit@gmail.com

Description

Updated the container port from 3000 to 50051 in sample k8s config

Issue reference

Fixes #592

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• [ ] Code compiles correctly
• [ ] Created/updated tests
• [ ] Extended the documentation

[berndverst]

Thanks for fixing this.