Link GRPECS files from bkg

Otherwise sim crashes after recent change to triple GRP format.

Author: sawenzel

MC/bin/o2dpg_sim_workflow.py

@@ -529,12 +529,14 @@ def getDPL_global_options(bigshm=False):
       LinkGRPFileTask=createTask(name='linkGRP_'+str(tf), needs=[BKG_HEADER_task['name'] if usebkgcache else BKGtask['name'] ], tf=tf, cwd=timeframeworkdir, cpu='0',mem='0')
       LinkGRPFileTask['cmd']='''
                              ln -nsf ../bkg_grp.root o2sim_grp.root;
+                             ln -nsf ../bkg_grpecs.root o2sim_grpecs.root;
                              ln -nsf ../bkg_geometry.root o2sim_geometry.root;
                              ln -nsf ../bkg_geometry.root bkg_geometry.root;
                              ln -nsf ../bkg_geometry-aligned.root bkg_geometry-aligned.root;
                              ln -nsf ../bkg_geometry-aligned.root o2sim_geometry-aligned.root;
                              ln -nsf ../bkg_MCHeader.root bkg_MCHeader.root;
-                             ln -nsf ../bkg_grp.root bkg_grp.root
+                             ln -nsf ../bkg_grp.root bkg_grp.root;
+                             ln -nsf ../bkg_grpecs.root bkg_grpecs.root
                              '''
    else:
       LinkGRPFileTask=createTask(name='linkGRP_'+str(tf), needs=[SGNtask['name']], tf=tf, cwd=timeframeworkdir, cpu='0', mem='0')