rsyslog from home:hermodur:rsyslog-15-4-update project

对于 15.4，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/home:hermodur:rsyslog-15-4-update/15.4/home:hermodur:rsyslog-15-4-update.repo
zypper refresh
zypper install rsyslog