UBUNTU: SAUCE: (no-up) apparmor: rebase of apparmor3.5-beta1 snapshot for 4.8

UBUNTU: SAUCE: (no-up) apparmor: rebase of apparmor3.5-beta1 snapshot for 4.8

BugLink: http://bugs.launchpad.net/bugs/1379535
This is a sync and squash of the apparmor 3.5-beta1 snapshot. The
set of patches in this squash are available in
  git://kernel.ubuntu.com/jj/ubuntu-xenial.git
using the the tag
  apparmor-3.5-beta1-presuash-snapshot

This fixes multiple bugs and adds the policy namespace stacking features.
BugLink: http://bugs.launchpad.net/bugs/1379535
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>