73X - fix pile-up modules reconfiguration

The following issues discussed in https://indico.cern.ch/event/344151/session/4/contribution/10/material/slides/0.pdf are addressed:
   * clone pile-up modules rather then re-configure them for use after RECO;
   * clone isolation modules rather than re-configure them in miniAOD;
   * resolve naming circle around top tagger in miniAOD.

@cmsbuild : test runtestPhysicsToolsPatAlgos is currently broken due to #6506 anyway.