Update/sharepoint ssi viewstate by adding cookie option

[chmod750]

Add cookie header as an option.
This can be used when authentication is performed trough an HTTP form for example.

Verification

• Start msfconsole
• use exploit/windows/http/sharepoint_ssi_viewstate
• set Cookie ''
• Verify Configure other inputs function of the target and run the exploit. The exploit shall work properly using added inputs.

Updates #14265.

[chmod750]

Thanks for your time and advices!
That's should be fine by now ;)

[wvu]

Yep, looks good now. I'll handle the doc changes, since I wrote them. Thanks!

[wvu]

Release Notes

Added a COOKIE option to the exploit/windows/http/sharepoint_ssi_viewstate module, primarily useful when SharePoint is authenticated through a web form.