HEAD-751 Switch usb-headnode build.spec to using ubuntu 10.04.2.9
HEAD-751 Switch usb-headnode build.spec to using ubuntu 10.04.2.9

kaizengarden/sdc-headnode,joyent/sdc-headnode,joyent/sdc-headnode,joyent/sdc-headnode,numericillustration/sdc-headnode,kaizengarden/sdc-headnode,numericillustration/sdc-headnode,kaizengarden/sdc-headnode,joyent/sdc-headnode,kaizengarden/sdc-headnode,numericillustration/sdc-headnode