some azure metrics are wrong

[andyzhangx]

What happened:
Following azure metrics are wrong, mc.observe func is invoked twice:

azLoadBalancersClient.CreateOrUpdate: load_balancers_create_or_update
azLoadBalancersClient.Delete: load_balancers_delete
azLoadBalancersClient.Get: public_ip_addresses_create_or_update
azRouteTablesClient.CreateOrUpdate: route_tables_create_or_update
azPublicIPAddressesClient: public_ip_addresses_delete
azVirtualMachineScaleSetVMsClient.Udate: vmssvm_update
azDisksClient.CreateOrUpdate: disks_create_or_update
azDisksClient.Delete: disks_delete

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• Kubernetes version (use kubectl version):
• Cloud provider or hardware configuration:
• OS (e.g: cat /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Network plugin and version (if this is a network-related bug):
• Others:

/assign
/sig azure