Update GptTmpl to include SEHOP

[mlosapio]

Need to add SEHOP lockdown per: https://www.stigviewer.com/stig/windows_10/2016-11-03/finding/V-68849
Issue: #50

[mlosapio]

Since github flags this as a binary this is the line added to the file:

MACHINE\System\CurrentControlSet\Control\Session Manager\Kernel\DisableExceptionChainValidation=4,0```

[mlosapio]

Per the issue - this is the wrong way to accomplish this task if you're on 1709.

[iadgovuser1]

I'm pretty the Exploit Guard config that we have takes care of this. That config will be released once the new version of the SHB is released (soon).