The beta cluster currently includes 40 wiki variations, which are listed in all-labs.dblist. While testing some FileImporter features, we discovered that not all the beta wikis are present in the sites table. In fact, a diff shows:

Maybe we should change https://wikitech.wikimedia.org/wiki/Nova_Resource:Deployment-prep/Add_a_wiki or the addWiki.php script to also update the sites table, as well as synchronize the current sites list.