Merge branch 'stable-2.16'

* stable-2.16:
  Set Gerrit to 2.14.20
  Set Gerrit to 2.15.13
  Set version to 2.13.14 and require Java 8
  Set version to 2.13.13
  Set Gerrit to 2.15.12
  Set Gerrit to 2.14.19
  Set Gerrit to 2.16.7
  Set Gerrit to 2.16.6
  Set Gerrit to 2.15.11

Change-Id: I304fa4d6808f922fa8058b875c602d24cdf76d4b