Add radius backend support is dbaccess_parser

src/lib/dhcpsrv/parsers/dbaccess_parser.cc

@@ -107,6 +107,7 @@ DbAccessParser::parse(CfgDbAccessPtr& cfg_db,
     string dbtype = type_ptr->second;
     if ((dbtype != "memfile") &&
         (dbtype != "mysql") &&
+        (dbtype != "radius") &&
         (dbtype != "postgresql") &&
         (dbtype != "cql")) {
         ConstElementPtr value = database_config->get("type");