Return default config directory, based in the actual test path

        :returns: default config directory

def get_default_config_directory():
        """Return default config directory, based in the actual test path

        :returns: default config directory
        """
        test_path = os.path.dirname(os.path.realpath(inspect.getouterframes(inspect.currentframe())[2][1]))
        return os.path.join(test_path, 'conf')