loongson/pypi: links for clusto-ec2

loongson/mirror clusto-ec2-0.6.4.tar.gz
loongson/mirror clusto-ec2-0.6.3.tar.gz
loongson/mirror clusto-ec2-0.6.2.tar.gz
loongson/mirror clusto-ec2-0.6.1.tar.gz
loongson/mirror clusto-ec2-0.6.tar.gz
loongson/mirror clusto-ec2-0.4.5.tar.gz