message: Add VmssVM PUT API
diff: }
  },
  "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}": {
  + "put": {
  + "tags": [
  + "VirtualMachineScaleSetVMs"
  + ],
  + "operationId": "VirtualMachineScaleSetVMs_Update",
  + "description": "Updates a virtual machine of a VM scale set.",
  + "parameters": [
  + {
  + "name": "resourceGroupName",
  + "in": "path",
  + "required": true,
  + "type": "string",
  + "description": "The name of the resource group."
  + },
  + {
  + "name": "vmScaleSetName",
  + "in": "path",
  + "required": true,
  + "type": "string",
  + "description": "The name of the VM scale set where the extension should be create or updated."
  + },
  + {
  + "name": "instanceId",
  + "in": "path",
  + "required": true,
  + "type": "string",
  + "description": "The instance ID of the virtual machine."
  + },
  + {
  + "name": "parameters",
  + "in": "body",
  + "required": true,
  + "schema": {
  + "$ref": "#/definitions/VirtualMachineScaleSetVM"
  + },
  + "description": "Parameters supplied to the Update Virtual Machine Scale Sets VM operation."
  + },
  + {
  + "$ref": "#/parameters/ApiVersionParameter"
  + },
  + {
  + "$ref": "#/parameters/SubscriptionIdParameter"
  + }
  + ],
  + "responses": {
  + "200": {
  + "description": "OK",
  + "schema": {
  + "$ref": "#/definitions/VirtualMachineScaleSetVM"
  + }
  + },
  + "202": {
  + "description": "Accepted",
  + "schema": {
  + "$ref": "#/definitions/VirtualMachineScaleSetVM"
  + }
  + }
  + },
  + "x-ms-long-running-operation": true
  + },
  "delete": {
  "tags": [
  "VirtualMachineScaleSetVMs"
  