Merge pull request #209504 from ericd-mst-github/erd-vm-extensions-linux

added ms.custom tag for GGAL

Author: prmerger-automator[bot]

articles/virtual-machines/extensions/agent-linux.md

@@ -6,6 +6,7 @@ ms.service: virtual-machines
 ms.subservice: extensions
 ms.author: gabsta
 author: MsGabsta
+ms.custom: GGAL-freshness822
 ms.collection: linux
 ms.date: 10/17/2016