loongson/pypi: links for spinnaker-proxy

loongson/mirror spinnaker_proxy-2.0.4.tar.gz
loongson/mirror spinnaker_proxy-2.0.3.tar.gz
loongson/mirror spinnaker_proxy-2.0.2.tar.gz
loongson/mirror spinnaker_proxy-2.0.1.tar.gz
loongson/mirror spinnaker_proxy-2.0.0.tar.gz