message: Once again: possibility to compile with C++17
diff: #include "AliVVZERO.h"
  #include <algorithm>
  #include <fstream>
  +#include <random>
  const Double_t pi = TMath::Pi();
  @@ -1021,8 +1022,9 @@ void AliAnalysisTaskRidge::FillTracks(){
  }
  }
  -
  - std::random_shuffle ( goodtrackindices.begin(), goodtrackindices.end() );
  + std::random_device rd;
  + std::default_random_engine engine{rd()};
  + std::shuffle ( goodtrackindices.begin(), goodtrackindices.end(), engine );
  double MaxPhi=0;
  @@ -1396,7 +1398,9 @@ void AliAnalysisTaskRidge::FillTracklets(){
  }
  //eta is in ordering, so detaleta is always negative. solution -> Shuffle
  - std::random_shuffle ( goodtrackindices.begin(), goodtrackindices.end() );
  + std::random_device rd;
  + std::default_random_engine engine{rd()};
  + std::shuffle ( goodtrackindices.begin(), goodtrackindices.end(), engine );
  fMultiplicity = fEvt -> GetMultiplicity();
  const UInt_t ntracks = goodtrackindices.size();
  