CLI does not show session stats for distributable web apps

Issue

• We tried checking session stats for our clustered distributable web app on EAP 6, but we see mostly 0 values returned:

    "outcome" => "success",
    "result" => {
        "active-sessions" => 1,
        "context-root" => "/distributablewebapp",
        "duplicated-session-ids" => 0,
        "expired-sessions" => 0,
        "max-active-sessions" => 0,
        "rejected-sessions" => 0,
        "session-avg-alive-time" => 0,
        "session-max-alive-time" => 0,
        "sessions-created" => 0,
        "virtual-host" => "default-host",
        "servlet" => undefined
    }