add community gallery image identifier (#23820)

Co-authored-by: Theodore Chang <[email protected]>

Author: grizzlytheodore

specification/compute/resource-manager/Microsoft.Compute/GalleryRP/stable/2022-03-03/communityGallery.json

@@ -373,7 +373,7 @@
           "description": "The end of life date of the gallery image definition. This property can be used for decommissioning purposes. This property is updatable."
         },
         "identifier": {
-          "$ref": "./galleryRPCommon.json#/definitions/GalleryImageIdentifier"
+          "$ref": "#/definitions/CommunityGalleryImageIdentifier"
         },
         "recommended": {
           "$ref": "./galleryRPCommon.json#/definitions/RecommendedMachineConfiguration"
@@ -482,6 +482,23 @@
         }
       },
       "description": "Describes the properties of a gallery image version."
+    },
+    "CommunityGalleryImageIdentifier": {
+      "properties": {
+        "publisher": {
+          "type": "string",
+          "description": "The name of the gallery image definition publisher."
+        },
+        "offer": {
+          "type": "string",
+          "description": "The name of the gallery image definition offer."
+        },
+        "sku": {
+          "type": "string",
+          "description": "The name of the gallery image definition SKU."
+        }
+      },
+      "description": "This is the community gallery image definition identifier."
     }
   },
   "parameters": {