- Force a content model on the title used by LuaEngineTestBase, so that
calls to getPageLanguage() won't end up hitting the DB
- Don't actually use SiteStats from SiteLibrary in unit tests. There
seem to be no test actually using this data.
Bug: T345372
Change-Id: I35884f04b582678982fb5f64d9199bab41cd8bce