Modify log to DEBUG level for TMAC Mcast generation

Change-Id: Idae3ade1217693d4e4a46c6ba630efb2b959d130
diff --git a/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/Ofdpa2Pipeline.java b/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/Ofdpa2Pipeline.java
index 3f8cf77..17a2d86 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/Ofdpa2Pipeline.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/Ofdpa2Pipeline.java
@@ -1023,7 +1023,7 @@
                 .fromApp(applicationId)
                 .makePermanent()
                 .forTable(TMAC_TABLE).build();
-        log.info("Building flowRule {}", rule);
+        log.debug("Building TMac Mcast flowRule {}", rule);
         return rule;
     }