Issue #3497914: Make tests run on GitLab CI.

Issue #3420063 by justcaldwell, mohd sahzad, webfaqtory, eugeney, andikanio, slayne40, mellowtothemax, joseph.olstad, handkerchief, carolpettirossi, guido_s, junkuncz, chuck_theobald, millerrs, anybody, bsingh, kevin-jhonatan, s_leu, grevil, joe_carvajal, urmoucher, captain_canuck, avinashm, igorgoncalves: Error: Call to a member function getConfig() OverridesSectionStorage.php

Closes #3497914