tests: apparmor: Always end with a newline
tests: apparmor: Always end with a newline

Some error messages in lxc-test-apparmor didn't end with a newline,
leading to slightly difficult to read output.

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>
Acked-by: Serge E. Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

lxc/lxc-pkg-ubuntu,lxc/lxc-pkg-ubuntu,lxc/lxc-pkg-ubuntu