kernel-default from home:roberto.sassu:digest_cache project

需要 openSUSE Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:roberto.sassu:digest_cache/openSUSE_Tumbleweed/home:roberto.sassu:digest_cache.repo
zypper refresh
zypper install kernel-default