Support scrambling of header files in scramble_korapxml tool

Change-Id: Ia87ef3f1164f16c2dd8bd2163a0dac25ca44aeec
diff --git a/t/tools/example_rules.json b/t/tools/example_rules.json
index a2117ea..dc3fc6d 100644
--- a/t/tools/example_rules.json
+++ b/t/tools/example_rules.json
@@ -7,5 +7,13 @@
       ["f[name=pos]", "~"]
     ]
   ],
-  ["struct/structure.xml"]
+  ["struct/structure.xml"],
+  [
+    "header.xml",
+    [
+      ["forename"]
+    ]
+  ],
+  ["../header.xml"],
+  ["../../header.xml"]
 ]