Update MergePrepare.java

Author: vasile-baluta

src/main/java/com/ericsson/ei/jsonmerge/MergePrepare.java

@@ -131,6 +131,8 @@ public static String longestCommonSubstring(String s1, String s2) {
     // stringObject which are
     // different representations of the same object.
     public String getMergePathFromArrayMergeRules(String originObject, String mergeRule, String stringObject) {
+       log.debug(" mergeRules are : " + mergeRule);
+       log.debug(" originObject is : " + originObject);
         try {
             JSONArray ruleJSONArray = new JSONArray(mergeRule);
             String firstRule = ruleJSONArray.getString(0);