[pkg-apparmor] Bug#712451: Please support AppArmor network rules

[intrigeri]

intrigeri:
> John, could you please tell me how I can benefit from the network
> socket mediation feature that was merged into Linux 4.17?

John answered my question on IRC:

- "you can't yet. You will need an apparmor 3.0 beta which keeps
  getting delayed"
- "for various reasons, I won't let the network patches into the wild
  without the tie to the feature abi work"

So let's put this on the back burner until there's userspace available
to benefit from the new kernel feature.