Function update_config

qa/tasks/devstack.py:200–209

(config_name, config_stream, update_dict,
                      section='DEFAULT')

        node.run(args=['cp', '-f', file_name, file_name + backup_ext])

    def update_config(config_name, config_stream, update_dict,
                      section='DEFAULT'):
        parser = ConfigParser()
        parser.read_file(config_stream)
        for (key, value) in update_dict.items():
            parser.set(section, key, value)
        out_stream = StringIO()
        parser.write(out_stream)
        out_stream.seek(0)
        return out_stream

    updates = [
        dict(name='/etc/glance/glance-api.conf', options=dict(