Simplify configuring Dogfood environment

Common ask from service teams.
I think azdev is the best place for this as this is a dev activity, but i am fine with other places, as long as it saves me the time to searching the outlook for the mail threads with all those endpoints :)

//CC @tjprescott

首先检查 azdev 以及当前如何配置 Dogfood 端点；issue 未指明任何文件、测试或现有入口点。与服务团队澄清所需的工作流和配置源，然后定义完成简化后应提供什么。

由索引模型根据 Issue 内容生成。