FlexRIC release v2

- update KPM available versions
 - bool return when reading Service Models

openair2/E2AP/RAN_FUNCTION/CUSTOMIZED/ran_func_mac.c

@@ -27,7 +27,7 @@ static
 const int mod_id = 0;
 
 
-void read_mac_sm(void* data)
+bool read_mac_sm(void* data)
 {
   assert(data != NULL);
 
@@ -110,6 +110,8 @@ void read_mac_sm(void* data)
 
     ++i;
   }
+
+  return num_ues > 0;
 }
 
 void read_mac_setup_sm(void* data)