loongson/pypi: links for caching-s3-proxy

loongson/mirror caching-s3-proxy-0.7.tar.gz
loongson/mirror caching-s3-proxy-0.6.tar.gz
loongson/mirror caching-s3-proxy-0.5.tar.gz
loongson/mirror caching-s3-proxy-0.4.tar.gz
loongson/mirror caching-s3-proxy-0.2.tar.gz
loongson/mirror caching-s3-proxy-0.1.tar.gz