Add include of linux.system.single.debian into int models

Change-Id: I9182c18a11f3aabdcd47ae686230655260bd79c7
Related-Bug: PROD-18591
diff --git a/classes/cluster/virtual-mcp11-k8s-calico/infra/init.yml b/classes/cluster/virtual-mcp11-k8s-calico/infra/init.yml
index 0551bab..e19165e 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico/infra/init.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico/infra/init.yml
@@ -1,5 +1,6 @@
 classes:
 - system.linux.system.single
+- system.linux.system.single.debian
 - system.linux.system.repo.mcp.extra
 - system.linux.system.repo.mcp.salt
 - system.linux.system.repo.mcp.apt_mirantis.ubuntu