loongson/mirror: links for spotinst-sdk-beta2

loongson/mirror spotinst-sdk-beta2-2.1.2.tar.gz
loongson/mirror spotinst-sdk-beta2-2.1.1.tar.gz
loongson/mirror spotinst-sdk-beta2-2.0.1.tar.gz
loongson/mirror spotinst-sdk-beta2-2.0.0.tar.gz