Add proposed patches to improve handling of flaky tests

With these changes, the flaky/known-failing tests are no longer installed
as installed-tests at all, so remove them from the autopkgtest metadata.

debian/tests/control

@@ -5,7 +5,3 @@ Restrictions: allow-stderr, superficial
 Tests: installed-tests
 Depends: at-spi2-core, dbus-daemon, gnome-desktop-testing (>= 2018.1-1~), gtk-3-examples, librsvg2-common, xauth, xvfb
 Restrictions: allow-stderr
-
-Tests: installed-tests-a11ystate installed-tests-reftests
-Depends: at-spi2-core, dbus-daemon, gnome-desktop-testing (>= 2018.1-1~), gtk-3-examples, librsvg2-common, xauth, xvfb
-Restrictions: allow-stderr, flaky

debian/tests/installed-tests-a11ystate

@@ -1,19 +0,0 @@
-#!/bin/sh
-# autopkgtest check: Run the installed-tests to verify GTK works correctly
-# Based on glib2.0's d/tests/installed-tests, (C) 2013 Canonical Ltd.
-
-set -e
-
-# Disable gvfs if it happens to be installed. We want to test the built-in
-# stuff
-export GIO_USE_VFS=local
-export GIO_USE_VOLUME_MONITOR=unix
-
-export XDG_RUNTIME_DIR="$AUTOPKGTEST_TMP"
-
-exec dbus-run-session -- \
-xvfb-run -a -s "-screen 0 1024x768x24" \
-gnome-desktop-testing-runner \
---report-directory="$AUTOPKGTEST_ARTIFACTS" \
---tap \
-"gtk+/a11ystate.test"

debian/tests/installed-tests-reftests

@@ -1,19 +0,0 @@
-#!/bin/sh
-# autopkgtest check: Run the installed-tests to verify GTK works correctly
-# Based on glib2.0's d/tests/installed-tests, (C) 2013 Canonical Ltd.
-
-set -e
-
-# Disable gvfs if it happens to be installed. We want to test the built-in
-# stuff
-export GIO_USE_VFS=local
-export GIO_USE_VOLUME_MONITOR=unix
-
-export XDG_RUNTIME_DIR="$AUTOPKGTEST_TMP"
-
-exec dbus-run-session -- \
-xvfb-run -a -s "-screen 0 1024x768x24" \
-gnome-desktop-testing-runner \
---report-directory="$AUTOPKGTEST_ARTIFACTS" \
---tap \
-"gtk+/reftests"