vet.sh: ensure vet runs on all packages (#3395)
vet.sh: ensure vet runs on all packages (#3395)


menghanl/grpc-go,stanley-cheung/grpc-go,grpc/grpc-go,dfawley/grpc-go,grpc/grpc-go,dfawley/grpc-go,menghanl/grpc-go,stanley-cheung/grpc-go