allow cgroup mounting in nesting profile

config/apparmor/profiles/lxc-default-with-nesting

@@ -5,12 +5,10 @@ profile lxc-container-default-with-nesting flags=(attach_disconnected,mediate_de
   #include <abstractions/lxc/container-base>
   #include <abstractions/lxc/start-container>
 
-#  Uncomment the line below if you are not using cgmanager
-#  mount fstype=cgroup -> /sys/fs/cgroup/**,
-
   deny /dev/.lxc/proc/** rw,
   deny /dev/.lxc/sys/** rw,
   mount fstype=proc -> /var/cache/lxc/**,
   mount fstype=sysfs -> /var/cache/lxc/**,
   mount options=(rw,bind),
+  mount fstype=cgroup -> /sys/fs/cgroup/**,
 }