Upgrade bazlets to latest stable-2.16 to build with 2.16.10 API
Upgrade bazlets to latest stable-2.16 to build with 2.16.10 API

Change-Id: I3a276ac33e46f8db865abb1cd537ef56bd6a4eea

GerritCodeReview/plugins_delete-project,GerritCodeReview/plugins_delete-project,GerritCodeReview/plugins_delete-project,GerritCodeReview/plugins_delete-project