UBUNTU: SAUCE: apparmor: patch to provide compatibility with v2.x net rules

UBUNTU: SAUCE: apparmor: patch to provide compatibility with v2.x net rules

The networking rules upstreamed in 4.17 have a deliberate abi break
with the older 2.x network rules.

This patch provides compatibility with the older rules for those
still using an apparmor 2.x userspace and still want network rules
to work on a newer kernel.

Signed-off-by: John Johansen <john.johansen@canonical.com>
[ saf: resolve conflicts when rebasing to 4.20 ]
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>