[pitivi] flatpak: Use gst-validate-launcher directly to run tests

[Thibault Saunier <tsaunier src gnome org>]

commit f33805394aae055c1c5a8aea25cd120151b8c718
Author: Thibault Saunier <tsaunier gnome org>
Date:   Sun Apr 30 17:18:24 2017 -0300

    flatpak: Use gst-validate-launcher directly to run tests

 build/flatpak/pitivi-flatpak |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/build/flatpak/pitivi-flatpak b/build/flatpak/pitivi-flatpak
index 0944dbc..7a4a0da 100755
--- a/build/flatpak/pitivi-flatpak
+++ b/build/flatpak/pitivi-flatpak
@@ -451,8 +451,9 @@ class PitiviFlatpak:  # pylint: disable=too-many-instance-attributes
             self.setup_dev_env()
 
         if self.check:
-            self.run_in_sandbox("make", "check",
-                                exit_on_failure=True,
+            self.run_in_sandbox("gst-validate-launcher",
+                                os.path.join(self.topdir, "tests/run_testsuite.py"),
+                                "--xunit-file", "xunit.xml", exit_on_failure=True,
                                 cwd=self.topdir)
 
         if self.bundle: