Merge "update Cloud Test Lab guide for Firebase / Studio 2.2. Originally written by Aaron Carey. bug: 30400568" into nyc-dev am: bf5f1674c7 am: 50c4b9269c am: 6c3f26e5fe am: f946b7f643
am: a2aa9aea54

Change-Id: Iac0cfc0b22262887f1ed999ab0ad9e2e54ceefc2