[Futurev4] fix failing tests

• Test 1: GaussSys.gausssys Here, I had to change the test so that it accepts the minimum working configuration coming from Gaussino.
• Test 2: LoKiGen.jira_461 ROOTIO from HepMC3 caused namespace collision with HepMC. It'll be now commented out in Gaussino as there is no need for it yet.
• Test 3: LoKiGen.lokigen0 Same problem as above + it looks like LoKi has some problems with dereferencing HepMC.GenParticle(). For example, this GP(HepMC.GenParticle()) gives

static double LoKi::Dicts::FunCalls<HepMC3::GenParticle>::__call__(LoKi::Functor<shared_ptr<const HepMC3::GenParticle>,double>& fun, const shared_ptr<const HepMC3::GenParticle>& o) =>
    could not convert argument 2

• Test 4: GaussTracker.shortened_sensdet_name This test, in its current shape, won't work because the expected debug debug() << "Sens det shortened name " << name() << " -> " << detname << endmsg; has been moved to the construct() in GiGaMTG4SensDetFactory. I wonder, in fact, whether this test is going to be useful... update: This is a very specific configuration in order to trigger a debug message with a shortened name of the sensitive detector. In order to do so, in Gauss-on-Gaussino it will only be triggered by running construct() on the GiGaSensDetTracker.

needs Gaussino/Gaussino!18 (merged) @gcorti @dmuller

Gen/LbSuperChic2/src/component/LHAupSuperChic2.cpp

@@ -26,7 +26,7 @@ Pythia8::LHAupSuperChic2::LHAupSuperChic2(Pythia *pythiaIn, string dirIn) :
   pythia->settings.addParm(pre + "rts", 13000, true, false, 0, 0);
   pythia->settings.addMode(pre + "isurv", 4, true, true, 1, 4);
   pythia->settings.addWord(pre + "intag", "in");
-  pythia->settings.addWord(pre + "PDFname", "CT09MCS");
+  pythia->settings.addWord(pre + "PDFname", "MMHT2014lo68cl");
   pythia->settings.addMode(pre + "PDFmember", 0, true, false, 0, 0);
   pythia->settings.addMode(pre + "proc", 50, true, true, 1, 67);
   pythia->settings.addWord(pre + "outtag", "out");