https://bugzilla.tianocore.org/show_bug.cgi?id=627 Add shell=True in Popen() calls to support direct execution of python scripts Cc: Liming Gao <liming.gao@intel.com> Cc: Yonghong Zhu <yonghong.zhu@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>