[ReleasePR app] Update properties to align with service side (#2234)

Create to sync Azure/azure-rest-api-specs#18080
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/app?expand=1)

Author: msftbot[bot]

schemas/2022-01-01-preview/Microsoft.App.json

@@ -1350,6 +1350,10 @@
           "description": "Hostname."
         }
       },
+      "required": [
+        "certificateId",
+        "name"
+      ],
       "description": "Custom Domain of a Container App"
     },
     "CustomOpenIdConnectProvider": {