2de79ea
Switch cloud base back to extlinux from grub2. We need to unset the 64bit option on ext4 to make extlinux work. See https://bugzilla.redhat.com/show_bug.cgi?id=1369934 and http://www.syslinux.org/wiki/index.php/Filesystem#ext (cherry picked from commit 99727567b054f89fa901f824dbe501e303871fae)