loongson/pypi: links for pytest-scenario

loongson/mirror pytest-scenario-1.0a6.tar.gz
loongson/mirror pytest-scenario-1.0a5.tar.gz
loongson/mirror pytest-scenario-1.0a4.tar.gz
loongson/mirror pytest-scenario-1.0a3.tar.gz
loongson/mirror pytest-scenario-1.0a2.tar.gz
loongson/mirror pytest-scenario-1.0a1.tar.gz