Upgrade bazlets to latest stable-2.16 to build with 2.16.7 API
Upgrade bazlets to latest stable-2.16 to build with 2.16.7 API

Change-Id: I804eea0fa06d2460e1dc808690ca91d2ac52645e

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