Fix GaudiAlg references and tests for Gaudi v39 (!4668) · Merge requests · LHCb / LHCb

This MR fixes the tests failures in GaudiAlg caused by some backward incompatible changes from %v39r0 in gaudi/Gaudi, in particular:

gaudi/Gaudi!1553 (merged) (reference files updates)
gaudi/Gaudi!1605 (merged) (some helpers got renamed)
gaudi/Gaudi!1628 (merged) (we were still implicitly relying on some GaudiAlg code from Gaudi)

Fix GaudiAlg references and tests for Gaudi v39