loongson/pypi: links for airflow-connection-plugin

loongson/mirror airflow-connection-plugin-1.0.0.tar.gz
loongson/mirror airflow-connection-plugin-1.0.0rc5.tar.gz
loongson/mirror airflow-connection-plugin-1.0.0rc4.tar.gz
loongson/mirror airflow-connection-plugin-1.0.0rc3.tar.gz
loongson/mirror airflow-connection-plugin-1.0.0rc2.tar.gz