Merge  branch 'stable-3.5'

* stable-3.5:
  Allow polling filesystem to be run on a specified queue
  fixup!: Poll the filesystem for new events
  Poll the filesystem for new events
  Allow events from other primaries to be dispatched
  Add ability to drop events by classname
  Cleanup the event capturing for diffs
  Run formatter on classes
  test/docker: Support installing multiple plugins
  test/docker/run: Stop caching artifacts
  test/docker/run: Clarify --gerrit-war usage
  Bump to Gerrit API
  Add docker tag to docker-tests target

Change-Id: Ie77344b2173cfd62cd88556c0deee59a0d2327ed