Fixes for ITS seeding vertexer

Author: shahor02

Detectors/ITSMFT/ITS/tracking/include/ITStracking/TrackingConfigParam.h

@@ -42,7 +42,7 @@ struct VertexerParamConfig : public o2::conf::ConfigurableParamHelper<VertexerPa
   float maxZPositionAllowed = 25.f; // 4x sZ of the beam
 
   // Artefacts selections
-  int clusterContributorsCut = 3; // minimum number of contributors for an accepted final vertex
+  int clusterContributorsCut = 2; // minimum number of contributors for an accepted final vertex
   int suppressLowMultDebris = 16; // suppress all vertices below this threshold if a vertex was already found in a rof
   int seedMemberRadiusTime = 0;
   int seedMemberRadiusZ = 2;

Detectors/ITSMFT/ITS/tracking/src/TrackingInterface.cxx

@@ -346,6 +346,7 @@ void ITSTrackingInterface::run(framework::ProcessingContext& pc)
   for (size_t iROF{0}; iROF < allTrackROFs.size(); ++iROF) {
     allTrackROFs[iROF].setFirstEntry(rofEntries[iROF]);
     allTrackROFs[iROF].setNEntries(rofEntries[iROF + 1] - rofEntries[iROF]);
+    allTrackROFs[iROF].setFlags(vertROFvec[iROF].getFlags());
     if (mTimeFrame->getROFMaskView().isROFEnabled(clockLayerId, (int)iROF)) {
       auto& irFrame = irFrames.emplace_back(allTrackROFs[iROF].getBCData(), allTrackROFs[iROF].getBCData() + clockLayer.mROFLength - 1);
       irFrame.info = allTrackROFs[iROF].getNEntries();