Add preliminary module to cover 'Misfortune Cookie', CVE-2014-9222

The details are still largely missing, but we do know from public documentation that this affects RomPager < 4.34.

Validation involves tracking down or building a system that responds to ```/Allegro``` with a RomPager-like ```Server``` header.  Exactly what the ```Server``` header should look like can be seen in Recog [here](https://github.com/rapid7/recog/blob/master/xml/http_servers.xml#L2653-2665)

Against a supposedly vulnerable host:

```
msf auxiliary(allegro_rompager_misfortune_cookie) > check
[*] 10.0.1.34:8080 - The target appears to be vulnerable.
[*] Checked 1 of 1 hosts (100% complete)
msf auxiliary(allegro_rompager_misfortune_cookie) > run

[+] 10.0.1.34:8080 appears to be vulnerable
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
```

Against a supposedly invulnerable host:

```
msf auxiliary(allegro_rompager_misfortune_cookie) > check
[*] 10.4.25.240:8080 - The target service is running, but could not be validated.
[*] Checked 1 of 1 hosts (100% complete)
msf auxiliary(allegro_rompager_misfortune_cookie) > run

[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

```
I was going to ask the same question :D