Merge branch 'stable-2.16' into stable-3.0

* stable-2.16:
  EventsLogCleaner: Don't use lambda to create tasks
  Add unified prefix '[pluginName]' to both queues and task
  Upgrade bazlets to latest stable-2.15 to build with 2.15.18 API
  Upgrade bazlets to latest stable-2.15
  Upgrade bazlets to latest stable-2.14
  Bazel: Migrate workspace status script to python
  Upgrade bazlets to latest stable-2.16
  Upgrade bazlets to latest stable-2.15
  Upgrade bazlets to latest stable-2.14
  Bump Bazel version to 1.1.0

Change-Id: I7b6a4ebb1782b0a69937cf3e1d76bc043f596625