changing from PXBDetId/PXFDetId to TrackerTopology in CondTools

Replacement of #5646 based on CMSSW_7_3_X_2014-10-09-1400
you'll need to do the same/corresponding set of changes also in your SiPixelFedCablingMapWriter_cfg.py and (potentially) in other configuration files you include. See my other comment above.