fixHLT tracking validation

fix to the WARNING message pointed out in 
https://github.com/cms-sw/cmssw/pull/3011
it was due to a missing case among the different flavour of SiStrip RecHits !

moreover, 
- I added the hltLhcParametersDefinerForTP in MultiTrackValidator
- I re-organized the HLT tracking validation sequence, fixing the association between the different track collections and the TP
Ciao Mia,
I may be very naive, but why do you need now a full copy and not a ref any longer...?