Upgrade bazlets to latest stable-2.16 to build with 2.16.2 API
Upgrade bazlets to latest stable-2.16 to build with 2.16.2 API

Change-Id: Iead66ba57899bc7a139c56f6acd5136169b14f6e

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