supervisor unit sessions now actually call txnctrl.cleanup

supervisor/session/rtu/turbine.lua

@@ -165,6 +165,8 @@ function turbine.new(session_id, unit_id, advert, out_queue)
             _request_tanks()
             self.periodics.next_tanks_req = time_now + PERIODICS.TANKS
         end
+
+        self.session.post_update()
     end
 
     -- get the unit session database