6865006 ldom validate shouldn't check for password file if migration type is set to normal

*** 339,347 ****
--- 339,348 ----
  
  {
          PROPERTY = Password_file;
          EXTENSION;
          STRING;
+         DEFAULT = "";
          TUNABLE = WHEN_DISABLED;
          DESCRIPTION = "The complete path to the file containing the target host password";
  }