domain_info: add 'topest_parent' info + fix small bug with return_self option for _get_parent_domain_of
domain_info: add 'topest_parent' info + fix small bug with return_self option for _get_parent_domain_of

YunoHost/yunohost,YunoHost/yunohost,YunoHost/yunohost,YunoHost/yunohost