Merge branch 'stable-2.16'

* stable-2.16:
  Add Metric containing Gerrit and Java version information

Change-Id: Ic06704d9bdf3d9e8e62b27969ed9039a61b96550
tree: 6cb626fc9650366f4d5698c4a22ef722e7c67b12
  1. BUILD
  2. external_plugin_deps.bzl
  3. pom.xml
  4. src/