Merge branch 'stable-3.2' into stable-3.3

* stable-3.2:
  Introduce an optional configuration to define a regex for naming rules
  Upgrade bazlets to latest stable-3.1 to build with 3.1.12 API
  Upgrade bazlets to latest stable-3.2 to build with 3.2.6 API
  Upgrade bazlets to latest stable-3.1 to build with 3.1.11 API

Change-Id: Ic4e881927a5057b4209cac7d60d1bd8d9afccff4