[Bro] Redirect Chain Script

[anthony kasza]

If anyone is interested I have the beginnings of a redirect/driveby
analysis policy script here:
<https://github.com/anthonykasza/scratch_pad/tree/master/redirections>.

I've only tested it on pcaps but it seems to work nicely. I image the
output is a little difficult to interpret if you don't understand what
the script is doing but I think it may be a good foundation for
something. Thoughts and feedback are welcome.

-AK