loongson/pypi: links for pfrock-http-plugin

loongson/mirror pfrock-http-plugin-0.2.1.tar.gz
loongson/mirror pfrock-http-plugin-0.2.1a1.tar.gz
loongson/mirror pfrock-http-plugin-0.2.1.dev10.tar.gz
loongson/mirror pfrock-http-plugin-0.2.1.dev6.tar.gz