[5019] setListDefaults argument constified

src/lib/cc/simple_parser.cc

@@ -137,7 +137,7 @@ size_t SimpleParser::setDefaults(isc::data::ElementPtr scope,
 }
 
 size_t
-SimpleParser::setListDefaults(isc::data::ElementPtr list,
+SimpleParser::setListDefaults(isc::data::ConstElementPtr list,
                               const SimpleDefaults& default_values) {
     size_t cnt = 0;
     BOOST_FOREACH(ElementPtr entry, list->listValue()) {

src/lib/cc/simple_parser.h

@@ -98,7 +98,7 @@ class SimpleParser {
     /// @param list list to be iterated over
     /// @param default_values list of default values
     /// @return number of parameters inserted
-    static size_t setListDefaults(isc::data::ElementPtr list,
+    static size_t setListDefaults(isc::data::ConstElementPtr list,
                                   const SimpleDefaults& default_values);
 
     /// @brief Utility method that returns position of an element