Document auditing setups for testers to use

We've got a TBB AppArmor profile at https://trac.torproject.org/projects/tor/wiki/doc/AppArmorForTBB. On #5741 (closed), some dude named unknown posted iptables rules that log violations. I hear there is also an OSX Seatbelt policy floating around somewhere that may also be useful.

We should create a meta document, or perhaps just describe on https://trac.torproject.org/projects/tor/wiki/doc/build/BuildSignoff how to use these things to test for disk leaks, proxy issues, oddities, and other violations.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information