loongson/pypi: links for python-grpc-prometheus

loongson/mirror python_grpc_prometheus-0.2.0.tar.gz
loongson/mirror python_grpc_prometheus-0.1.5.tar.gz
loongson/mirror python_grpc_prometheus-0.1.4.tar.gz
loongson/mirror python_grpc_prometheus-0.1.2.tar.gz
loongson/mirror python_grpc_prometheus-0.1.1.tar.gz