Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Format BUILD file with buildifier 0.12.0
  Format .bzl files with buildifier 0.12.0
  Update bazlets to use 2.14.10 API
  Remove wildcard import
  Upgrade bazlets to latest revision on stable-2.14 to use 2.14.9 API

Change-Id: I775cdebcd63c2e0ffd78d9eb3b246dc9f6a3ec5a