https://bugzilla.tianocore.org/show_bug.cgi?id=1042 Convert Buffer to type bytearray before converting to a string of hex byte values so the type of items in Buffer is consistent for both Python 2.7.x and Python 3.x. Cc: YanYan Sun <yanyan.sun@intel.com> Cc: Yonghong Zhu <yonghong.zhu@intel.com> Cc: Liming Gao <liming.gao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>