[ReleasePR consumption] [Hub Generated] Review request for Microsoft.Consumption to add version stable/2021-10-01 (#2036)

Create to sync Azure/azure-rest-api-specs#16518
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/consumption?expand=1)

Author: msftbot[bot]

schemas/2021-10-01/Microsoft.Consumption.json

@@ -342,6 +342,40 @@
           ],
           "description": "The notification is enabled or not."
         },
+        "locale": {
+          "oneOf": [
+            {
+              "type": "string",
+              "enum": [
+                "en-us",
+                "ja-jp",
+                "zh-cn",
+                "de-de",
+                "es-es",
+                "fr-fr",
+                "it-it",
+                "ko-kr",
+                "pt-br",
+                "ru-ru",
+                "zh-tw",
+                "cs-cz",
+                "pl-pl",
+                "tr-tr",
+                "da-dk",
+                "en-gb",
+                "hu-hu",
+                "nb-no",
+                "nl-nl",
+                "pt-pt",
+                "sv-se"
+              ]
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Language in which the recipient will receive the notification."
+        },
         "operator": {
           "oneOf": [
             {
@@ -374,7 +408,8 @@
             {
               "type": "string",
               "enum": [
-                "Actual"
+                "Actual",
+                "Forecasted"
               ]
             },
             {