Merge branch 'stable-3.2' into master

* stable-3.2:
  Honour container.replica option
  Disable querychanges for gerrit replicas
  Normalize response payload returned by replicas
  Expose authenticated healthcheck for replicas
  Remove the terms slave and master
  Respect container.replica option for Gerrit replica
  Format with google-java-format 1.7

Change-Id: Ife9efe0f34983c566fd4047b2d5418a5f0bdfe11