Comment # 15 on bug 1195508 from Fabian Vogt

10i18n/module-setup.sh does:

    # openSUSE user may have KEYMAP set to something like ".gz"
    KEYMAP=${KEYMAP/.gz/}

    for keymap in "${!KEYMAPS[@]}"; do
        inst_opt_decompress "${keymap}"
    done

    if ! dracut_module_included "systemd"; then
        mksubdirs "${initdir}"${VCONFIG_CONF}
        print_vars KEYMAP EXT_KEYMAPS UNICODE FONT FONT_MAP FONT_UNIMAP >>
"${initdir}"${VCONFIG_CONF}
    fi

i.e. it removes the .gz suffix from KEYMAP and installs the mappings
uncompressed.
However, it only writes a new vconsole.conf with the .gz suffix removed if it's
not a systemd system.
The 00systemd module copies vconsole.conf as-is instead.

However, the ".gz" suffix shouldn't be used in /etc/vconsole.conf in the first
place, it works better without it.
loadkeys itself tries all compression suffixes by itself already.

So the JeOS kiwi files should probably change <keytable>us.map.gz</keytable> to
<keytable>us</keytable>