node last reboot time

Returns This property provides the last time System Inventory
collection On Reboot(CSIOR) was performed. The value is represented
as yyyymmddHHMMSS

retriewing this value to get the updated factory reset
value from ironic wsman bios interface

Change-Id: I73ff5eb517528afe56b5cf45a74fa5d5519db186
story:2008058
task:40739

dracclient/client.py

@@ -94,6 +94,18 @@ class DRACClient(object):
         """
         return self._power_mgmt.get_power_state()
 
+    def get_last_system_inventory_time(self):
+        """Returns This property provides the last time System Inventory 
+        Collection On Reboot(CSIOR) was performed. The value is represented 
+        as yyyymmddHHMMSS.
+        :returns: value is represented as yyyymmddHHMMSS
+        :raises: WSManRequestFailure on request failures
+        :raises: WSManInvalidResponse when receiving invalid response
+        :raises: DRACOperationFailed on error reported back by the DRAC
+                 interface
+        """
+        return self._system_cfg.last_system_inventory_time()
+
     def set_power_state(self, target_state):
         """Turns the server power on/off or do a reboot
 

dracclient/resources/system.py

@@ -58,6 +58,24 @@ class SystemConfiguration(object):
                 result[attribute.instance_id] = attribute
         return result
 
+    def last_system_inventory_time(self):
+        """"This property provides the last time SystemInventory Collection
+        On Reboot(CSIOR)was performed. The value is rep/resented as yyyymmddHHMMSS.
+
+        :returns: the time when the machine is last rebooted
+        :raises: WSManRequestFailure on request failures
+        :raises: WSManInvalidResponse when receiving invalid response
+        :raises: DRACOperationFailed on error reported back by the DRAC
+                 interface
+        """
+
+        filter_query = ('select LastSystemInventoryTime from DCIM_SystemView')
+        doc = self.client.enumerate(uris.DCIM_SystemView,
+                                    filter_query=filter_query)
+        inventorytime = utils.find_xml(doc, 'LastSystemInventoryTime',
+                                       uris.DCIM_SystemView)
+        return inventorytime.text
+
 
 class SystemAttribute(object):
     """Generic System attribute class"""