Include online monitoring in the TrigSuperCluster algorithms

This MR includes a monitoring algorithm in the TrigEgammaMonitoring package. This algorithm is used to perform the online monitoring of the TrigSuperClusterBuilder algorithms, in the HLT precision electron and photon reconstruction step. This implementation is being discussed in the JIRA Ticket ATR-20304.

ping: @fernando ,@cjmeyer and @jodafons .

Trigger/TrigMonitoring/TrigEgammaMonitoring/src/egammaMonitorSuperClusterAlgorithm.cxx

+/*
+    Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+  */
+
 #include "egammaMonitorSuperClusterAlgorithm.h"
 #include "xAODEgamma/EgammaContainer.h"
 #include "xAODEgamma/Electron.h"
@@ -20,9 +24,11 @@
 
 #include "AthenaMonitoringKernel/Monitored.h"
 #include "AthenaMonitoringKernel/GenericMonitoringTool.h"
+#include "GaudiKernel/SystemOfUnits.h"
+#include "GaudiKernel/PhysicalConstants.h"
 
 egammaMonitorSuperClusterAlgorithm::egammaMonitorSuperClusterAlgorithm( const std::string& name, ISvcLocator* pSvcLocator ):
-  AthAlgorithm( name, pSvcLocator )
+  AthReentrantAlgorithm( name, pSvcLocator )
 
 {}
 
@@ -34,7 +40,7 @@ StatusCode egammaMonitorSuperClusterAlgorithm::initialize()
   return StatusCode::SUCCESS;
 }
 
-StatusCode egammaMonitorSuperClusterAlgorithm::execute_r(const EventContext& ctx) const
+StatusCode egammaMonitorSuperClusterAlgorithm::execute(const EventContext& ctx) const
 {
   
     fillSuperClusterQuantities(ctx);
@@ -49,22 +55,21 @@ void egammaMonitorSuperClusterAlgorithm::fillSuperClusterQuantities( const Event
     ATH_MSG_DEBUG("Fill cluster quantities: ");
     
     std::vector<float> et_vec, eta_vec, phi_vec, clusterSize_vec, signalState_vec;
-    // float val{-99};
     
-    auto et_col               = Monitored::Collection("et"    , et_vec);
-    auto eta_col              = Monitored::Collection("eta"    , eta_vec);
-    auto phi_col             = Monitored::Collection("phi"   , phi_vec);
-    auto clusterSize_col             = Monitored::Collection("clusterSize"   , clusterSize_vec);
-    auto signalState_col             = Monitored::Collection("signalState"   , signalState_vec);
+    auto et_col = Monitored::Collection("et" , et_vec);
+    auto eta_col = Monitored::Collection("eta" , eta_vec);
+    auto phi_col = Monitored::Collection("phi", phi_vec);
+    auto clusterSize_col = Monitored::Collection("clusterSize" ,clusterSize_vec);
+    auto signalState_col = Monitored::Collection("signalState" ,signalState_vec);
     
     for (const auto& eg : *egammaRec) {
-        et_vec.push_back(eg->caloCluster()->et()/1000);
+
+        et_vec.push_back(eg->caloCluster()->et()/Gaudi::Units::GeV);
         eta_vec.push_back(eg->caloCluster()->eta());
         phi_vec.push_back(eg->caloCluster()->phi());
         clusterSize_vec.push_back(eg->caloCluster()->clusterSize());
         signalState_vec.push_back(eg->caloCluster()->signalState());
         
-
     }
     auto mon = Monitored::Group(m_monTool, et_col,eta_col,phi_col, clusterSize_col,signalState_col);
     ATH_MSG_DEBUG("SuperCluster - Online Monitoring in Reconstruction ...");