Fix the log output when starting the grpc gateway in the sdkserver (#1096)
Fix the log output when starting the grpc gateway in the sdkserver (#1096)

so that it is clear what port is being bound for http requests.
googleforgames/agones,googleforgames/agones,googleforgames/agones,googleforgames/agones,googleforgames/agones,googleforgames/agones,googleforgames/agones,googleforgames/agones