Replaced underscores with hyphens in cluster names and domains

Change-Id: I90d163602a0915b23f25f9f4d799799c0336e664
diff --git a/classes/cluster/drivetrain-ha-clusters/infra/init.yml b/classes/cluster/drivetrain-ha-clusters/infra/init.yml
index 583ce76..c5a0164 100644
--- a/classes/cluster/drivetrain-ha-clusters/infra/init.yml
+++ b/classes/cluster/drivetrain-ha-clusters/infra/init.yml
@@ -11,7 +11,7 @@
 parameters:
   _param:
     cluster_domain: drivetrain-ha-clusters.local
-    cluster_name: drivetrain_ha_clusters
+    cluster_name: drivetrain-ha-clusters
     apt_mk_version: nightly
     admin_email: root@localhosti
     infra_config_hostname: cfg01