Issue-1126: HostAndPort implement Serializable

Author: matt.tieman

src/main/java/redis/clients/jedis/HostAndPort.java

@@ -1,7 +1,11 @@
 package redis.clients.jedis;
 
-public class HostAndPort {
-  public static final String LOCALHOST_STR = "localhost";
+import java.io.Serializable;
+
+public class HostAndPort implements Serializable {
+private static final long serialVersionUID = -519876229978427751L;
+
+public static final String LOCALHOST_STR = "localhost";
 
   private String host;
   private int port;