Dimitris Athanasiou 919596b2e8
[7.x][ML] Move field extraction logic to its own package (#48709) (#48712)
Moves common field extraction logic to its own package so that it can
be used both for anomaly detection and data frame analytics.

In preparation for refactoring extraction fields to be simpler and to
support multi-fields properly.

Backport of #48709
2019-10-31 02:41:00 +02:00
..