stringify summary, in order to dump json file and generate html report.

def stringify_summary(summary):
    """ stringify summary, in order to dump json file and generate html report.
    """
    for index, suite_summary in enumerate(summary["details"]):

        if not suite_summary.get("name"):
            suite_summary["name"] = "testcase {}".format(index)

        for record in suite_summary.get("records"):
            meta_datas = record['meta_datas']
            __stringify_meta_datas(meta_datas)
            meta_datas_expanded = []
            __expand_meta_datas(meta_datas, meta_datas_expanded)
            record["meta_datas_expanded"] = meta_datas_expanded
            record["response_time"] = __get_total_response_time(meta_datas_expanded)