[CORD-2016] DHCPv4 packet broadcast flag is not reset in relay

Change-Id: I99a82693b69e042b197d44174095f4058ed40200
diff --git a/apps/dhcprelay/src/main/java/org/onosproject/dhcprelay/Dhcp4HandlerImpl.java b/apps/dhcprelay/src/main/java/org/onosproject/dhcprelay/Dhcp4HandlerImpl.java
index b9cbd5b..85540c6 100644
--- a/apps/dhcprelay/src/main/java/org/onosproject/dhcprelay/Dhcp4HandlerImpl.java
+++ b/apps/dhcprelay/src/main/java/org/onosproject/dhcprelay/Dhcp4HandlerImpl.java
@@ -577,6 +577,9 @@
             }
         }
 
+        // Remove broadcast flag
+        dhcpPacket.setFlags((short) 0);
+
         udpPacket.setPayload(dhcpPacket);
         // As a DHCP relay, the source port should be server port( instead
         // of client port.