Merge remote-tracking branch 'origin/develop' into bandwidth-testing-abs

# Conflicts:
#	executables/nr-uesoftmodem.c
#	executables/nr-uesoftmodem.h
#	executables/softmodem-common.h
#	openair2/LAYER2/NR_MAC_UE/mac_proto.h
#	openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
#	openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
#	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
#	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_uci.c
#	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

targets/RT/USER/lte-softmodem.c

@@ -525,6 +525,8 @@ int main ( int argc, char **argv )
   int ru_id;
   int node_type = ngran_eNB;
 
+  start_background_system();
+
   if ( load_configmodule(argc,argv,0) == NULL) {
     exit_fun("[SOFTMODEM] Error, configuration module init failed\n");
   }

targets/RT/USER/lte-uesoftmodem.c

@@ -757,6 +757,7 @@ int main( int argc, char **argv ) {
   printf("sync sent\n");
   /*
     printf("About to call end_configmodule() from %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__);
+    We have to set properly PARAMFLAG_NOFREE
     end_configmodule();
     printf("Called end_configmodule() from %s() %s:%d\n", __FUNCTION__, __FILE__, __LINE__);
   */