dirty workaround to make aaa lab passing

Change-Id: I82e26f1e4a5a5bf2bbe5e4d64a72b3e6e3b60309
diff --git a/classes/cluster/aaa-ha-freeipa/aaa/init.yml b/classes/cluster/aaa-ha-freeipa/aaa/init.yml
index 463b8d2..8da6aee 100644
--- a/classes/cluster/aaa-ha-freeipa/aaa/init.yml
+++ b/classes/cluster/aaa-ha-freeipa/aaa/init.yml
@@ -1,6 +1,10 @@
 classes:
 #- cluster.aaa-ha-freeipa.aaa
-- system.linux.system.single
+
+# FIXME: Workaround linux.system.single rhel
+#- system.linux.system.single
+- cluster.aaa-ha-freeipa.aaa.linux-system-single
+
 - system.openssh.server.team.lab
 - system.openssh.server.team.tcpcloud
 - system.openssh.server.team.mcp_qa