Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  AbstractElasticIndex: Make type field protected

Change-Id: Ic532bd52e2e7dc832b4e306164a3f7bff1eb39aa
tree: 1c594acee20b3756877f16cb158901e85430dd9e
  1. gerrit-acceptance-tests/
  2. gerrit-elasticsearch/
  3. gerrit-pgm/