* Replaced pkgos_var_user_group nova by pkgos_adduser, as we don't want to
create the log / lib dirs of nova (Closes: #709876).
* Creates the correct libvirt group if the package is installed in Ubuntu.
* Replaced pkgos_var_user_group nova by pkgos_adduser, as we don't want to
create the log / lib dirs of nova (Closes: #709876).
* Creates the correct libvirt group if the package is installed in Ubuntu.