Merge pull request #212 from terraform-providers/hub-licence-type

Support for the Windows_Client Hybrid Use Benefit

azurerm/resource_arm_virtual_machine.go

@@ -76,10 +76,14 @@ func resourceArmVirtualMachine() *schema.Resource {
 			},
 
 			"license_type": {
-				Type:         schema.TypeString,
-				Optional:     true,
-				Computed:     true,
-				ValidateFunc: validateLicenseType,
+				Type:             schema.TypeString,
+				Optional:         true,
+				Computed:         true,
+				DiffSuppressFunc: ignoreCaseDiffSuppressFunc,
+				ValidateFunc: validation.StringInSlice([]string{
+					"Windows_Client",
+					"Windows_Server",
+				}, true),
 			},
 
 			"vm_size": {
@@ -493,15 +497,6 @@ func resourceArmVirtualMachine() *schema.Resource {
 	}
 }
 
-func validateLicenseType(v interface{}, k string) (ws []string, errors []error) {
-	value := v.(string)
-	if value != "" && value != "Windows_Server" {
-		errors = append(errors, fmt.Errorf(
-			"[ERROR] license_type must be 'Windows_Server' or empty"))
-	}
-	return
-}
-
 func resourceArmVirtualMachineCreate(d *schema.ResourceData, meta interface{}) error {
 	client := meta.(*ArmClient)
 	vmClient := client.vmClient