change uptime calculation to be the sum of cpu_util of all cpuSim
change uptime calculation to be the sum of cpu_util of all cpuSim
dineshappavoo/virtdc,OnePaaS/virtdc,OnePaaS/virtdc,dineshappavoo/virtdc,dineshappavoo/virtdc,OnePaaS/virtdc,OnePaaS/virtdc,dineshappavoo/virtdc