Merge branch 'stable-2.15'
* stable-2.15:
Extend ServletModule instead of HttpPluginModule
Upgrade bazlets to latest stable-2.15 to build with 2.15.12 API
Upgrade bazlets to latest stable-2.14 to build with 2.14.19 API
Upgrade bazlets to latest stable-2.15
Upgrade bazlets to latest stable-2.14
Update bazlets to fix build with bazel 0.23
Update bazlets to fix build with bazel 0.23
Upgrade bazlets to latest stable-2.15 to build with 2.15.11 API
Upgrade bazlets to latest stable-2.15 to build with 2.15.10 API
Automatically format BUILD file with buildifier lint mode
Upgrade bazlets to latest stable-2.15 to build with 2.15.9 API
Upgrade bazlets to latest stable-2.15 to build with 2.15.8 API
Upgrade bazlets to latest stable-2.14 to build with 2.14.18 API
Bazel: Include eclipse-out directory in .bazelignore
Add explanatory comment to empty BUILD file(s)
Change-Id: Ic9d891f41c28edd857d78bf4472756b7a84244de
