Disabled tests for unused cluster models

Change-Id: Ibb6f2c3712a199e9835887a7c5b42c328f42473b
diff --git a/classes/cluster/sl-os-ovs/infra/init.yml b/classes/cluster/sl-os-ovs/infra/init.yml
index 174d408..3722558 100644
--- a/classes/cluster/sl-os-ovs/infra/init.yml
+++ b/classes/cluster/sl-os-ovs/infra/init.yml
@@ -1,4 +1,6 @@
 parameters:
+  _jenkins:
+    tests_enabled: false
   _param:
     cluster_domain: sl-os-ovs.local
     cluster_name: sl-os-ovs