Merge branch 'stable-2.16' into stable-3.0

* stable-2.16:
  Set Gerrit to 2.16.26
  Set Gerrit to 2.16.25
  Set Gerrit to 2.16.24
  Set Gerrit to 2.16.23

Change-Id: I15683c350979dc7648a0a919c0d560c7d95e4ab2