Updated mediawiki/extensions
Project: mediawiki/extensions/CirrusSearch  2fd4ab7ffa2991ad567ceb7d6abb7db2e8ec9568

More efficient alias maintenance.

Elastica's method to fetch which index has an alias is very slow.  We
work around it and see a significant speed improvement on clusters with
lots of indecies.

Bug: 54505
Change-Id: Iaa25accfb6c83f36455bf15af66c08233dcdd31c