Specify listening port of gRPC server
Specify listening port of gRPC server

To test a service that runs a gRPC server along with the k8s_adapter, we
need to specify corresponding listening ports to avoid port collisions.

Change-Id: If04ee0d84b52715a91960c9e88ed6af9d2956aaa
GitOrigin-RevId: 639b69a597f16b62634a876dc52bd7722add18fc

googlecloudrobotics/core,googlecloudrobotics/core,googlecloudrobotics/core