Remove nodes spec., deprecated in new way

Change-Id: I2677b0a5c5b564648ec3a1e8a0cd9bb9ad289080
diff --git a/classes/cluster/sl-k8s-contrail/infra/init.yml b/classes/cluster/sl-k8s-contrail/infra/init.yml
index 0b58654..6a22605 100644
--- a/classes/cluster/sl-k8s-contrail/infra/init.yml
+++ b/classes/cluster/sl-k8s-contrail/infra/init.yml
@@ -12,6 +12,7 @@
 
     cluster_domain: sl-k8s-contrail.local
     cluster_name: sl-k8s-contrail
+    cluster_public_host: 172.16.10.254
     apt_mk_version: nightly
   linux:
     network: