Shown the value of variable quantity "PRODUCT_SHORT" instead of
just shown string "PRODUCT_NAME" for the description of CustomDeviceDialog

Change-Id: I4be5cc33026664fbbb5cd36539741516382ff16a
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=981597
Signed-off-by: hadong <hadong0720@gmail.com>