Merge branch 'stable-3.0'

* stable-3.0:
  Upgrade bazlets to latest stable-3.0 to build with 3.0.4 API
  Upgrade bazlets to latest stable-2.16 to build with 2.16.13 API

Change-Id: I39a956abf5eabab89bf5fa80cdab2ac2e8e02b13