Nik Everett 18393a06f3 Fix reindex-from-remote for parent/child from <2.0
Versions before 2.0 needed to be told to return interesting fields
like `_parent`, `_routing`, `_ttl`, and `_timestamp`. And they come
back inside a `fields` block which we need to parse.

Closes #21044
2016-10-21 13:14:33 -04:00
..