Update description

Author: wchen-r7

modules/exploits/multi/http/glassfish_deployer.rb

@@ -21,7 +21,9 @@ def initialize(info={})
           This module logs in to an GlassFish Server (Open Source or Commercial) using various
         methods (such as authentication bypass, default credentials, or user-supplied login),
         and deploys a malicious war file in order to get remote code execution. It has been
-        tested on Glassfish 2.x, 3.0, 4.0 and Sun Java System Application Server 9.x.
+        tested on Glassfish 2.x, 3.0, 4.0 and Sun Java System Application Server 9.x. Newer
+        GlassFish versions do not allow remote access (Secure Admin) by default, but is required
+        for exploitation.
       },
       'License'        => MSF_LICENSE,
       'Author'         =>