device-mapper from home:vkbalusu:branches:SUSE:SLE-15-SP4:Update project

需要 standard ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:vkbalusu:branches:SUSE:SLE-15-SP4:Update/standard/home:vkbalusu:branches:SUSE:SLE-15-SP4:Update.repo
zypper refresh
zypper install device-mapper