loongson/pypi: links for deviotgateway

loongson/mirror DevIoTGateway-2.1.tar.gz
loongson/mirror DevIoTGateway-2.0.tar.gz
loongson/mirror DevIoTGateway-1.8.tar.gz
loongson/mirror DevIoTGateway-1.6.tar.gz
loongson/mirror DevIoTGateway-1.0.tar.gz