libvirt-bin.init: add cgconfig to Should-Start

This ensures we reliably process cgroups before starting libvirtd

Closes: #610738

debian/libvirt-bin.init

@@ -9,7 +9,8 @@
 # Provides:          libvirt-bin libvirtd
 # Required-Start:    $network $remote_fs $syslog
 # Required-Stop:     $remote_fs $syslog
-# Should-Start:      hal avahi
+# Should-Start:      hal avahi cgconfig
+# Should-Stop:       cgconfig
 # Default-Start:     2 3 4 5
 # Default-Stop:      0 1 6
 # Short-Description: libvirt management daemon