CodeGen from PR 16052 in Azure/azure-rest-api-specs

Update cosmos-db.json (#16052)

Added viewDefinition as required property

Author: SDKAuto

schemas/2021-07-01-preview/Microsoft.DocumentDB.json

@@ -2777,7 +2777,8 @@
         }
       },
       "required": [
-        "id"
+        "id",
+        "viewDefinition"
       ],
       "description": "Cosmos DB Cassandra view resource object"
     },