Build with released 2.16-rc0 API
Build with released 2.16-rc0 API

Update bazlets to the latest revision on master and switch to the
release API.

Change-Id: I858a646c6ea8a8c06c61db4e96037a790909fe54

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