Merge branch 'stable-3.9'

* stable-3.9:
  TestEventPublisher: double wait for event to 1000ms
  Adapt to the new Response API
  Add Jenkins pipeline for CI/CD validation with Gerrit-CI

Change-Id: Ic8ac5520e909b0b8ac4ee4d3366011aaeb5be082
tree: 0472e080372deed9eddda3858aa117142cf542e7
  1. src/
  2. BUILD
  3. external_plugin_deps.bzl
  4. Jenkinsfile