Add traprain debian autopkgtest

This commit adds the debian autopkgtest to execute the
traprain tests using gnome-desktop-testing-runner

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>
Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D6034

debian/tests/control

+Tests: gnome-desktop-testing
+Depends: gnome-desktop-testing, libtraprain-0-tests

debian/tests/gnome-desktop-testing

+#!/bin/sh
+
+# Copyright © 2017 Collabora Ltd.
+#
+# SPDX-License-Identifier: MPL-2.0
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+set -e
+
+exec 2>&1
+
+exec gnome-desktop-testing-runner traprain-0