Bug id is 1352227
Made a separate call for the getting the VirtualMachineStats object in instance summary page
Added the Last 1 hr string in VM stats summary page and on row expansion

Change-Id: Icebbb8303baa04aea210d6352de9452c1f83d24f
Merge "Bug id is 1352227 Made a separate call for the getting the VirtualMachineStats object in instance summary page Added the Last 1 hr string in VM stats summary page and on row expansion"