Upgrade bazlets to latest stable-2.16 to build with 2.16.16 API
Upgrade bazlets to latest stable-2.16 to build with 2.16.16 API

Change-Id: Ic41fa46df5d024be1f088b6649073419a3619589

GerritCodeReview/plugins_admin-console,GerritCodeReview/plugins_admin-console,GerritCodeReview/plugins_admin-console