Revert "Use 7z to extract python27new.tar.gz"
Revert "Use 7z to extract python27new.tar.gz"

andreibacos/hyperv-networking-ci,andreibacos/hyperv-networking-ci,rbuzatu90/hyperv-networking-ci,rbuzatu90/hyperv-networking-ci,cloudbase/hyperv-networking-ci,cloudbase/hyperv-networking-ci