Update linux system include

Recently installation of suggested/recommended packages was disabled
by default. This patch switch model to use that approach.

Change-Id: I08a126792d1e9d9f843ed6b223cdf221893a2a66
diff --git a/classes/cluster/virtual-mcp11-aio-manila/init.yml b/classes/cluster/virtual-mcp11-aio-manila/init.yml
index 1411684..242e910 100755
--- a/classes/cluster/virtual-mcp11-aio-manila/init.yml
+++ b/classes/cluster/virtual-mcp11-aio-manila/init.yml
@@ -1,7 +1,7 @@
 classes:
 - system.linux.network.dynamic_hosts
 - service.git.client
-- system.linux.system.single
+- system.linux.system.single.debian
 - system.linux.system.repo.mcp.salt
 - system.openssh.client.lab
 - system.salt.master.api