Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Upgrade wiremock to 2.18.0
  Upgrade mockito to 2.21.0
  Update bazlets to latest stable-2.14 to use 2.14.11 API

Change-Id: I42dc8fb5a6771a05255db72fd131a7d801ac4d7c