Print the multicast group id along with the number of packets replicated. (#1283)

* print mgid with packets replicated

Signed-off-by: Bara Kopi <[email protected]>

* print mg_id

Signed-off-by: Bara Kopi <[email protected]>

---------

Signed-off-by: Bara Kopi <[email protected]>
Co-authored-by: Bara Kopi <[email protected]>

Author: angelazhang8

src/bm_sim/simple_pre.cpp

@@ -290,7 +290,8 @@ McSimplePre::replicate(const McSimplePre::McIn ingress_info) const {
       }
     }
   }
-  BMLOG_DEBUG("number of packets replicated : {}", egress_info_list.size());
+  BMLOG_DEBUG("number of packets replicated : {} for multicast group id: {}",
+              egress_info_list.size(), ingress_info.mgid);
   return egress_info_list;
 }