8022478: Fix Warnings In sun.net.www.protocol.http Package

Reviewed-by: darcy

src/share/classes/sun/net/www/protocol/http/AuthCacheValue.java

@@ -37,6 +37,8 @@ import java.net.PasswordAuthentication;
 
 public abstract class AuthCacheValue implements Serializable {
 
+    static final long serialVersionUID = 735249334068211611L;
+
     public enum Type {
         Proxy,
         Server

src/share/classes/sun/net/www/protocol/http/AuthenticationInfo.java

@@ -51,6 +51,8 @@ import sun.net.www.HeaderParser;
 
 public abstract class AuthenticationInfo extends AuthCacheValue implements Cloneable {
 
+    static final long serialVersionUID = -2588378268010453259L;
+
     // Constants saying what kind of authroization this is.  This determines
     // the namespace in the hash table lookup.
     public static final char SERVER_AUTHENTICATION = 's';