Change the bios version dbus interface to align with bmcweb

bmcweb uses the software interface for bios version query in redfish,
to align with it, the settings service implements this interface,
this reference needs to be changed too

Tested:
AC cycle the system, then DC cycle the host,
BiosVersion in redfish is the correct bios version:
https://$BMCIP/redfish/v1/Systems/system

Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
Change-Id: I90d66d2f6c24779b09b694204fdbb5c1434f37d4
2 files changed