fedora-live-base: Exclude fcoe-utils and device-mapper-multipath from %packages
    
    As discussed here:
    https://fedoraproject.org/wiki/Changes/RemoveDeviceMapperMultipathFromWorkstationLiveCD
    And on the anaconda devel list, we do not want device-mapper-multipath
    on the livecd / on installs done from the livecd, because rather then
    properly supporting hotplug udev add/change events it brings in
    the long obsolete systemd-udev-settle.service which causes significant
    delays during boot.
    
    Since multipath is very much a data-center / server only feature we
    can simply exclude it from the livecd to get rid of the dependency on
    systemd-udev-settle.service .
    
    We also need to exclude fcoe-utils since that depends on
    device-mapper-multipath. Since FCOE too is a data-center / server
    only feature, we can simply exclude fcoe-utils too.