[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

Sim/GaussMonitor/options/MonitorTiming-Upgrade.py

@@ -14,6 +14,17 @@ giga.StepSeq.MonitorTiming.Volumes = [
     'Pipe', 'Converter'
 ]
 
+# Aggregate groups of volumes for summary
+giga.StepSeq.MonitorTiming.DetsGroups = {
+    'VP': ['Tracking'],
+    'UT': ['Tracking'],
+    'FT': ['Tracking'],
+    'Rich1': ['RICH'],
+    'Rich2': ['RICH'],
+    'Ecal': ['Calo'],
+    'Hcal': ['Calo']
+}
+
 # Need to run as post-config option: Add other memebers to StepSeq
 giga.StepSeq.Members += ['MonitorTiming']