Install lxcfs package with LXC in Apertis images

Due to pam_cgfs utils are needed for unprivileged LXC containers
creation. We should should install lxcfs package together with LXC in
Apertis images.

Apertis: https://phabricator.apertis.org/T4606



Signed-off-by: Andrew Lee (李健秋) <andrew.lee@collabora.co.uk>
Reviewed-by: Denis Pynkin <denis.pynkin@collabora.com>
Differential Revision: https://phabricator.apertis.org/D7629

apertis-ospack.yaml

@@ -203,6 +203,7 @@ actions:
     packages:
       - lxc
       - lxc-templates
+      - lxcfs
       - uidmap
 
   - action: overlay