gtk-key-theme-ctrluftw from openSUSE:Leap:42.3 project

需要 standard ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/openSUSE:Leap:42.3/standard/openSUSE:Leap:42.3.repo
zypper refresh
zypper install gtk-key-theme-ctrluftw