Merge branch 'stable-3.2' into stable-3.3

* stable-3.2:
  ForRef#check should permit internal users to read all refs
  Add Jacek Centkowski to developers
  Add support for Elasticsearch version 7.10.*
  Add support for Elasticsearch version 7.9.*
  Align http dependencies with elasticsearch-rest-client

Change-Id: I7515ca92f18a01931a79498d6c366cfb01fd743a
tree: b112085b78dff813b57dbb81a8abe7722a58eefe
  1. java/
  2. javatests/