[YAML] Add ms.custom tag to .yml and remove -old.md files

Author: rwestMSFT

articles/ai-services/openai/how-to/switching-endpoints-old.md

@@ -4,13 +4,15 @@ metadata:
   title: How to switch between OpenAI and Azure OpenAI Service endpoints with Python
   titleSuffix: Azure OpenAI Service
   description: Learn about the changes you need to make to your code to swap back and forth between OpenAI and Azure OpenAI endpoints.
-  author: mrbullwinkle 
-  ms.author: mbullwin 
+  author: mrbullwinkle
+  ms.author: mbullwin
+  manager: nitinme
+  ms.date: 02/16/2024
   ms.service: azure-ai-openai
-  ms.custom: devx-track-python
   ms.topic: how-to
-  ms.date: 02/16/2024
-  manager: nitinme
+  ms.custom:
+    - devx-track-python
+    - ge-structured-content-pilot
 title: |
   How to switch between OpenAI and Azure OpenAI endpoints with Python
 introduction: | 

articles/ai-services/openai/how-to/switching-endpoints.yml

@@ -4,13 +4,14 @@ metadata:
   title: Create a Translator resource
   titleSuffix: Azure AI services
   description: Learn how to create an Azure AI Translator resource and retrieve your API key and endpoint URL in the Azure portal.
-  #services: cognitive-services
   author: laujan
   ms.author: lajanuar
   manager: nitinme
+  ms.date: 09/06/2023
   ms.service: azure-ai-translator
   ms.topic: how-to
-  ms.date: 09/06/2023
+  ms.custom:
+    - ge-structured-content-pilot
 
 title: |
   Create a Translator resource