Migrate from legacy fact

This did not work on modern puppet in ubuntu24:
Warning: Interpolation failed with '::lsbdistcodename', but compilation continuing;
New syntax inspiration from:
https://www.puppet.com/docs/puppet/8/hiera_config_yaml_5#configuring_hiera

global/overlay/etc/puppet/hiera.yaml

@@ -21,7 +21,7 @@ hierarchy:
       pkcs7_public_key:  /etc/hiera/eyaml/public_certkey.pkcs7.pem
 
   - name: "Overrides per distribution"
-    path: "dist_%{::lsbdistcodename}_override.yaml"
+    path: "dist_%{facts.os.distro.codename}_override.yaml"
 
   - name: "Data common to whole environment"
     path: "common.yaml"