If instance_ram_util and instance_disk_util can not get data from datasource. we can use instance data, just like total_cpu_utilization Change-Id: I4170b96946b07435411ada5ff4a14c978c0435b4
If instance_ram_util and instance_disk_util can not get data from datasource. we can use instance data, just like total_cpu_utilization Change-Id: I4170b96946b07435411ada5ff4a14c978c0435b4