loongson/pypi: links for docker-plugin-api

loongson/mirror docker-plugin-api-0.3.tar.gz
loongson/mirror docker_plugin_api-0.3-py3-none-any.whl
loongson/mirror docker-plugin-api-0.2.tar.gz
loongson/mirror docker_plugin_api-0.2-py3-none-any.whl
loongson/mirror docker-plugin-api-0.1.tar.gz
loongson/mirror docker_plugin_api-0.1-py3-none-any.whl