nodepool scale down instead of vmss scale

Author: camrynl

.pipelines/cni/cilium/cilium-scale-test.yaml

@@ -442,6 +442,7 @@ stages:
       - job: scale_down
         pool:
           name: "$(BUILD_POOL_NAME_DEFAULT)"
+        timeoutInMinutes: 120
         steps:
           - task: AzureCLI@2
             inputs:
@@ -454,7 +455,7 @@ stages:
                 az aks get-credentials --resource-group ${RESOURCE_GROUP} --name ${CLUSTER}
                 echo "Scaling to 5 nodes"
                 vmss_name=$(az vmss list -g MC_${RESOURCE_GROUP}_${CLUSTER}_$(LOCATION) --query "[].name" -o tsv)
-                make -C ./hack/aks scale-vmss AZCLI=az GROUP=${RESOURCE_GROUP} CLUSTER=${CLUSTER} REGION=$(LOCATION) VMSS_NAME=$vmss_name NODE_COUNT=5
+                az aks nodepool scale --name nodepool1 --cluster-name ${CLUSTER} --resource-group ${RESOURCE_GROUP} --node-count 5
                 kubectl get node
             name: "ScaleDown"
             displayName: "Scale down to 5 Nodes"