Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Format all Bazel build files with buildifier
  Update bazlets to latest stable-2.14 to build with 2.14.14 API
  Update bazlets to latest stable-2.14 to build with 2.14.13 API
  Update bazlets to latest stable-2.14 to use 2.14.12 API

Change-Id: Id30e8c2129fc0a06476f0990b91a0cbffa1e2673