Updated mediawiki/extensions
Project: mediawiki/extensions/ExtensionDistributor  68f8dd361f7e5ef28496b333daedb28d22051c29

Add support for fetching branch lists from Gerrit

Introduces "ExtDistProviders", which represent different backends
to use to fetch branch information for extensions from. Currently
Github and Gerrit are both supported, though Gerrit requires an
external service to generate tarballs.

Bug: 68608
Change-Id: I5c4ca2ee13f256260a7fe9b703af5fbdb902db66