loongson/pypi: links for piped-contrib-validation

loongson/mirror piped.contrib.validation-0.7.0.tar.gz
loongson/mirror piped.contrib.validation-0.4.0.tar.gz
loongson/mirror piped.contrib.validation-0.3.0.tar.gz
loongson/mirror piped.contrib.validation-0.2.0.tar.gz
loongson/mirror piped.contrib.validation-0.1.0.tar.gz