Merge branch 'stable-3.5' into stable-3.6

* stable-3.5:
  Give execute permission to entrypoint.sh
  Remove unused env variables
  Return empty list when prefix is not matched in suggest
  Expose debug ports in Gerrit
  Do no update Gerrit rpm
  Remove /a from fetch url in replication.config.template
  Allow anonymous clones when pull-replication plugin is enabled.

Also update Gerrit image version to 3.6.3.

Change-Id: Icf3d9ea111a8f0ad4a78ab355cb50dff2a5b7835