fix model domains to valid names

Change-Id: Ia89d35ffb204401ac05c11ac877a9a3b69e56745
diff --git a/classes/cluster/drivetrain_ha_clusters/infra/init.yml b/classes/cluster/drivetrain_ha_clusters/infra/init.yml
index da06ecd..3f5db90 100644
--- a/classes/cluster/drivetrain_ha_clusters/infra/init.yml
+++ b/classes/cluster/drivetrain_ha_clusters/infra/init.yml
@@ -10,7 +10,7 @@
 - system.openssh.server.team.oss_team
 parameters:
   _param:
-    cluster_domain: drivetrain_ha_clusters.local
+    cluster_domain: drivetrain-ha-clusters.local
     cluster_name: drivetrain_ha_clusters
     apt_mk_version: nightly
     admin_email: root@localhosti