CmdStagerVBS is now in Rex::Exploitation

```
 $ ./msfconsole -qx "loadpath test/modules/; exit"
 Loaded 32 modules:
     12 auxiliarys
	 12 exploits
	 8 posts
```

test/modules/exploits/test/cmdweb.rb

@@ -10,7 +10,7 @@ class Metasploit3 < Msf::Exploit::Remote
   # =( need more targets and perhaps more OS specific return values OS specific would be preferred
 
   include Msf::Exploit::Remote::HttpClient
-  include Msf::Exploit::CmdStagerVBS
+  include Rex::Exploitation::CmdStagerVBS
 
   def initialize(info = {})
     super(update_info(info,