Configure enwiki to use CirrusSearch MLR by default

Authored by EBernhardson on Sep 13 2017, 12:46 AM.

Description

Configure enwiki to use CirrusSearch MLR by default

Based on the impressive performance in AB testing, enable
the MLR model as default for enwiki.

Bug: T175772
Change-Id: I5eadc6faa3f0ca7fd1f68aa9fc6cc8d8a9f73aa4

Details