TrigEDMConfig: fix L1_eTauBDTRoI Aux item and improve unit tests

The unit tests were useless for many cases because errors were not being checked and the test return code was often 0 despite error.

• add missing Aux. to L1_eTauBDTRoI
• return failure code when printing an error
• use noerror.sh
• add a check to ensure Aux follows non-Aux container (if this is violated we are writing data that cannot be deserialized because our Deserialiser has an implicit assumption on the order of the containers: Interface, Aux, dynAux)

@tamartin @okuprash

Trigger/TriggerCommon/TrigEDMConfig/python/TriggerEDMRun3.py

@@ -392,7 +392,7 @@ TriggerHLTListRun3 = [
     ('xAOD::eFexTauRoIContainer#L1_eTauRoI',                                        'BS ESD AODFULL', 'L1'),
     ('xAOD::eFexTauRoIAuxContainer#L1_eTauRoIAux.thresholdPatterns',                'BS ESD AODFULL', 'L1'),
     ('xAOD::eFexTauRoIContainer#L1_eTauBDTRoI',                                     'BS ESD AODFULL', 'L1'),
-    ('xAOD::eFexTauRoIAuxContainer#L1_eTauBDTRoI.thresholdPatterns',                'BS ESD AODFULL', 'L1'),
+    ('xAOD::eFexTauRoIAuxContainer#L1_eTauBDTRoIAux.thresholdPatterns',             'BS ESD AODFULL', 'L1'),
     ('xAOD::eFexTauRoIContainer#L1_cTauRoI',                                        'BS ESD AODFULL', 'L1'),
     ('xAOD::eFexTauRoIAuxContainer#L1_cTauRoIAux.thresholdPatterns.jTauLink',       'BS ESD AODFULL', 'L1'),