Add LXC to 'development' and 'sdk' images

Add `lxc` and `lxc-template` packages.
Put `lxc-apertis-ostree` template to system folder allowing to create
container out of the box with command:
 lxc-create -t apertis-ostree --name <container_name> -- --ospack <url>

Signed-off-by: Denis Pynkin <denis.pynkin@collabora.com>
Reviewed-by: Emanuele Aina <emanuele.aina@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D7447

apertis-ospack.yaml

@@ -93,6 +93,22 @@ actions:
   {{- end -}}
 
   {{- if eq $type "development" "sdk" }}
+  - action: apt
+    description: "LXC packages"
+    packages:
+      - lxc
+      - lxc-templates
+
+  - action: overlay
+    description: "Install the Apertis template to LXC"
+    source: lxc/lxc-apertis-ostree
+    destination: /usr/share/lxc/templates/lxc-apertis-ostree
+
+  - action: run
+    description: "Set executable bit on Apertis LXC template"
+    chroot: true
+    command: chmod a+x /usr/share/lxc/templates/lxc-apertis-ostree
+
   - action: apt
     description: "Development packages"
     packages: