Description of problem:
Attribute cluster-password can't be set using CLI in EAP 6.1.0.DR2 build (HornetQ Server version 2.3.0.CR1)

Log from CLI:
[standalone@localhost:9999 hornetq-server=default] :write-attribute(name=cluster-password, value="heslo")
{
    "outcome" => "failed",
    "failure-description" => "JBAS014749: Operation handler failed: JBAS011664: Runtime handling for cluster-password is not implemented",
    "rolled-back" => true,
    "response-headers" => {"process-state" => "reload-required"}
}