obs-server from home:bs-team:openSUSE:open-build-service:PR-12630 project

需要 15.4 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:bs-team:openSUSE:open-build-service:PR-12630/15.4/home:bs-team:openSUSE:open-build-service:PR-12630.repo
zypper refresh
zypper install obs-server