Merge branch 'stable-2.15' into stable-2.16 * stable-2.15: Format Java files with google-java-format 1.7 Upgrade mockito-core to 2.25.0 Upgrade bazlets to latest stable-2.15 Upgrade bazlets to latest stable-2.14 Update bazlets to fix build with bazel 0.23 Change-Id: I3aecd098c949e155029277b51c9f9553984aee70