[BESU-25] Use Devp2p Ping packets at v5 (#392)

Broadcast that we support snappy compression

Signed-off-by: Danno Ferrin <danno.ferrin@gmail.com>

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## 1.4.1
+
+### Bug Fixes
+
+- [BESU-25](https://jira.hyperledger.org/browse/BESU-25) Use v5 Devp2p when pinging [\#392](https://github.com/hyperledger/besu/pull/392)
+
+
 ## 1.4.0 RC-1 
 
 ### Additions and Improvements 

ethereum/p2p/src/main/java/org/hyperledger/besu/ethereum/p2p/discovery/internal/PingPacketData.java

@@ -22,8 +22,8 @@ import org.hyperledger.besu.ethereum.rlp.RLPOutput;
 
 public class PingPacketData implements PacketData {
 
-  /* Fixed value that represents we're using v4 of the P2P discovery protocol. */
-  private static final int VERSION = 4;
+  /* Fixed value that represents we're using v5 of the P2P discovery protocol. */
+  private static final int VERSION = 5;
 
   /* Source. */
   private final Endpoint from;

ethereum/p2p/src/test/java/org/hyperledger/besu/ethereum/p2p/discovery/PeerDiscoveryPacketPcapSedesTest.java

@@ -90,7 +90,8 @@ public class PeerDiscoveryPacketPcapSedesTest {
         ping.getTo().getTcpPort().ifPresent(p -> assertThat(p).isPositive());
         ping.getFrom().getTcpPort().ifPresent(p -> assertThat(p).isPositive());
         assertThat(ping.getExpiration()).isPositive();
-        break;
+        // because of the version upgrade the ping packet won't re-serialize, so we're done
+        return;
 
       case PONG:
         assertThat(packet.getPacketData(PongPacketData.class)).isPresent();