Azure Virtual Machine Scale Set (VMSS) - 
You can declare to scrape an Azure Virtual Machine Scale Set via the VirtualMachineScaleSet resource
type.
The following fields need to be provided:
scaleSetName- The name of the Virtual Machine Scale Set
All supported metrics are documented in the official Azure Monitor documentation.
Example:
name: azure_virtual_machine_scale_set_percentage_cpu
description: "Average percentage cpu usage on an Azure virtual machine scale set"
resourceType: VirtualMachineScaleSet
azureMetricConfiguration:
  metricName: Percentage CPU
  dimension:
    name: VMName
  aggregation:
    type: Average
resources:
- scaleSetName: promitor-virtual-machine-scale-set-1