* Merged ubuntu packaging changes: - debian/control: Drop socat in favor of netcat. - debian/nova-compute.upstart.in, debian/nova.conf: Move reference of nova-compute.conf from nova.conf to nova-compute's argv. - debian/nova-common.postinst: Create 'nova' group, add user to it. - debian/nova-common.postinst: Restrict permissions of /var/log/nova