Replaced underscores with hyphens in cluster names and domains

Change-Id: I90d163602a0915b23f25f9f4d799799c0336e664
diff --git a/classes/cluster/model-manager/infra/init.yml b/classes/cluster/model-manager/infra/init.yml
index 697d92d..6b24a1d 100644
--- a/classes/cluster/model-manager/infra/init.yml
+++ b/classes/cluster/model-manager/infra/init.yml
@@ -1,7 +1,7 @@
 parameters:
   _param:
     cluster_domain: model-manager.local
-    cluster_name: model_manager
+    cluster_name: model-manager
     infra_config_deploy_address: 192.168.10.90
     infra_config_address: 172.16.10.100
     cluster_public_host: mm.mcp.mirantis.net