Merge branch 'stable-3.9'

* stable-3.9:
  Bazel: Consume auto-value artifacts from plugin-api
  Fix ssh query output for '--depends-on--all' search attribute
  DependencyResolver: Resolve using ChangeNotes input
  Propagator: Reuse change notes more
  Use change notes when available to load messages
  Improve documentation for Search Operators by adding examples

Change-Id: I270a7346f7db3937108ccad5bb82b75660026c6c