Fix model_manager cluster model

Change-Id: I8487e81e26df5065a0ad84b276288c087e2fb08c
diff --git a/classes/cluster/model_manager/infra/init.yml b/classes/cluster/model_manager/infra/init.yml
index c99dcd4..3172079 100644
--- a/classes/cluster/model_manager/infra/init.yml
+++ b/classes/cluster/model_manager/infra/init.yml
@@ -4,6 +4,7 @@
     cluster_name: model_manager
     infra_config_deploy_address: 192.168.10.100
     infra_config_address: 172.16.10.100
+    cluster_public_host: ${_param:infra_config_address}
   linux:
     network:
       host: