Updated mediawiki/extensions
Project: mediawiki/extensions/CentralAuth  aa50f7e82b0302e7b72add398e58e412641fe38a

Remove underscore from class names LBFactory_*

Depends on merging of MediaWiki core patch
https://gerrit.wikimedia.org/r/#/c/96469/

Change-Id: Ife2acfcee37e228ee95e36efed56e80ac10a98b3