[apparmor] Where should the new aa-exec live in packaging

[John Johansen]

So we have a binary (C based) version of aa-exec that just needs a little
more revision before we land it. One of the things we need to decide is
which package to put it in.

We could modify the utils packaging to handle binary and no arch, create
a new package for binary utils, or just move it into the apparmor_parser
packaging, and make it part of the default install.

What are peoples preferences for this