Preserve original hostname in ResolvedInetAddress so that we can pass it into createSslEngine in NIO mode

(cherry picked from commit d3681d4)

Author: ogolberg

src/main/java/com/rabbitmq/client/DnsRecordIpAddressResolver.java

@@ -74,7 +74,7 @@ public List<Address> getAddresses() throws UnknownHostException {
 
         List<Address> addresses = new ArrayList<>();
         for (InetAddress inetAddress : inetAddresses) {
-            addresses.add(new ResolvedInetAddress(inetAddress, portNumber));
+            addresses.add(new ResolvedInetAddress(hostName, inetAddress, portNumber));
         }
         return addresses;
     }

src/main/java/com/rabbitmq/client/ResolvedInetAddress.java

@@ -6,13 +6,13 @@
 public class ResolvedInetAddress extends Address {
     private final InetAddress inetAddress;
 
-    public ResolvedInetAddress(InetAddress inetAddress, int port) {
-        super(inetAddress.getHostAddress(), port);
+    public ResolvedInetAddress(String originalHostname, InetAddress inetAddress, int port) {
+        super(originalHostname, port);
         this.inetAddress = inetAddress;
     }
 
-    public ResolvedInetAddress(InetAddress inetAddress) {
-        super(inetAddress.getHostAddress());
+    public ResolvedInetAddress(String originalHostname, InetAddress inetAddress) {
+        super(originalHostname);
         this.inetAddress = inetAddress;
     }
 

src/main/java/com/rabbitmq/client/impl/SocketFrameHandlerFactory.java

@@ -17,13 +17,11 @@
 
 import com.rabbitmq.client.Address;
 import com.rabbitmq.client.ConnectionFactory;
-import com.rabbitmq.client.ResolvedInetAddress;
 import com.rabbitmq.client.SocketConfigurator;
 import com.rabbitmq.client.SslContextFactory;
 
 import javax.net.SocketFactory;
 import java.io.IOException;
-import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.util.concurrent.ExecutorService;