new config no PixelHitDiscCnfgAlg without an IBL
Teach new config for PixelConditions to not set up PixelHitDiscCnfgAlg without an IBL.
This corresponds to !29573 (merged) to also solve ATLASSIM-4420 in the new config.
An example succeeded without IBL when replacing line 33 of DigitizationConfigNew_test.py with
ConfigFlags.Input.Files = ["/cvmfs/atlas-nightlies.cern.ch/repo/data/data-art/DigitizationTests/ttbar.ATLAS-R1-2010-02-00-00.HITS.pool.root"]
.