fix

Author: yanzhudd

src/azure-cli/azure/cli/command_modules/vm/_template_builder.py

@@ -360,6 +360,8 @@ def _build_os_profile():
             os_profile['secrets'] = secrets
 
         if enable_auto_update is not None and custom_image_os_type.lower() == 'windows':
+            if 'windowsConfiguration' not in os_profile:
+                os_profile['windowsConfiguration'] = {}
             os_profile['windowsConfiguration']['enableAutomaticUpdates'] = enable_auto_update
 
         # Windows patch settings
@@ -368,6 +370,9 @@ def _build_os_profile():
                 raise ValidationError(
                     'Invalid value of --patch-mode for Windows VM. Valid values are AutomaticByOS, '
                     'AutomaticByPlatform, Manual.')
+
+            if 'windowsConfiguration' not in os_profile:
+                os_profile['windowsConfiguration'] = {}
             os_profile['windowsConfiguration']['patchSettings'] = {
                 'patchMode': patch_mode,
                 'enableHotpatching': enable_hotpatching