The default cluster can be renamed

* dicos/29_one-master.xml: “one_cluster_name” store the name of the
  default cluster.

* postservice/30-one-mng: take care of the customizable cluster name.

* postservice/31-one-netmng: ditoo.

* scripts/onehost_create_all: ditoo.

Ref: #23553

scripts/onehost_create_all

@@ -24,9 +24,7 @@ function copy_ssh_id()
 #
 function register_node()
 {
-	# ref https://dev-eole.ac-dijon.fr/issues/16797
-    #cmd="onehost create -i kvm -v kvm -n ovswitch -c \"$(CreoleGet one_cluster_name)\" ${1}"
-    cmd="onehost create -i kvm -v kvm -n ovswitch -c \"default\" ${1}"
+    cmd="onehost create -i kvm -v kvm -n ovswitch -c 0 ${1}"
     ret=$(su - ${ONEUSER} -c -- "${cmd}")
     return $?
 }