tree eb0cb6bd363cbcfdeb6d2810ad5bfbde43d41767
parent 8bdb0f7f85dad37a514c9ef80c48e6343eea9d45
author ivan-zhu <bozhu@linux.vnet.ibm.com> 1382083074 +0800
committer ivan-zhu <bozhu@linux.vnet.ibm.com> 1382088295 +0800

use "" instead of "None" in xml file

The value "" will be consider as None, when API receive it.
But "None" will be consider as the string "None"

Closes-Bug: 1241397

Change-Id: I01f25dcc073684b1843abeb5814bc22b0520c5b1