Nik Everett ee5f8c4522 Consolidate some reindex utility classes (#22666)
Everything that extended `AbstractAsyncBulkByScrollAction` also
extended `AbstractAsyncBulkIndexByScrollAction` so this removes
`AbstractAsyncBulkIndexByScrollAction`, merging it into
`AbstractAsyncBulkByScrollAction`.
2017-01-18 16:58:39 -05:00
..