Removing Bolt V2 from handshake options (#707)

Author: gjmwoods

driver/src/main/java/org/neo4j/driver/internal/async/connection/BoltProtocolUtil.java

@@ -45,7 +45,7 @@ public final class BoltProtocolUtil
             BoltProtocolV41.VERSION.toInt(),
             BoltProtocolV4.VERSION.toInt(),
             BoltProtocolV3.VERSION.toInt(),
-            BoltProtocolV2.VERSION.toInt() ) ).asReadOnly();
+            0 ) ).asReadOnly();
 
     private static final String HANDSHAKE_STRING = createHandshakeString();
 

driver/src/test/java/org/neo4j/driver/internal/async/connection/BoltProtocolUtilTest.java

@@ -45,14 +45,14 @@ void shouldReturnHandshakeBuf()
         assertByteBufContains(
                 handshakeBuf(),
                 BOLT_MAGIC_PREAMBLE, BoltProtocolV41.VERSION.toInt(), BoltProtocolV4.VERSION.toInt(),
-                BoltProtocolV3.VERSION.toInt(), BoltProtocolV2.VERSION.toInt()
+                BoltProtocolV3.VERSION.toInt(), 0
         );
     }
 
     @Test
     void shouldReturnHandshakeString()
     {
-        assertEquals( "[0x6060b017, 260, 4, 3, 2]", handshakeString() );
+        assertEquals( "[0x6060b017, 260, 4, 3, 0]", handshakeString() );
     }
 
     @Test