Merge branch 'stable-3.0'

* stable-3.0:
  Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
  Upgrade bazlets to latest stable-3.0 to build with 3.0.8 API

Change-Id: I6bdf96867a3b2f42c227efeee42dd6d02bc187c9