initialize-mediawiki-staging: Prepare /srv/mediawiki symlink
Ensure that train-dev's deploy container has a /srv/mediawiki symlink
(pointing to /srv/mediawiki-staging) like the production deploy
server.
Bug: T329857
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Ensure that train-dev's deploy container has a /srv/mediawiki symlink
(pointing to /srv/mediawiki-staging) like the production deploy
server.
Bug: T329857