Для openSUSE Factory запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon/openSUSE_Factory/X11:Pantheon.repo
zypper refresh
zypper install switchboard-plug-keyboard
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon/16.0/X11:Pantheon.repo
zypper refresh
zypper install switchboard-plug-keyboard
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon/15.6/X11:Pantheon.repo
zypper refresh
zypper install switchboard-plug-keyboard