Roll back the changes in revision 14296 since it will cause iSCSI security authentication issue.
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ouyang Qian <qian.ouyang@intel.com> 
Reviewed-by: Ye Ting <ting.ye@intel.com>


git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/MdeModulePkg@14503 6f19259b-4bc3-4df7-8a09-765794883524