Java: Add missing stub.

Author: aschackmull

java/ql/test/stubs/jsr311-api-1.1.1/javax/ws/rs/core/Cookie.java

@@ -151,4 +151,8 @@ public String getDomain() {
     public String getPath() {
         return null;
     }
+
+    public String toString() {
+        return null;
+    }
 }