InDetRecExample: Python 3 fixes

...InDetExample/InDetRecExample/python/InDetJobProperties.py

...tor/InDetExample/InDetRecExample/python/TrackingCommon.py

...etRecExample/share/ConfiguredxAODTrackParticleCreation.py

...nDetExample/InDetRecExample/share/InDetInclusiveSecVtx.py

...ple/InDetRecExample/share/InDetInclusiveSecVtx_fromAOD.py

...or/InDetExample/InDetRecExample/share/InDetRecXKalIPat.py

...InDetExample/InDetRecExample/share/InDetRec_jobOptions.py

...nDetExample/InDetRecExample/share/ReadInDet_jobOptions.py

...etExample/InDetRecExample/share/jobOptions_RecExCommon.py