debug suite: add test that deliberately fails

Change-Id: I42ab624f8dd8e91ee62b8eccfa451e01fd3694d0
diff --git a/suites/debug/fail.py b/suites/debug/fail.py
new file mode 100644
index 0000000..1b412b5
--- /dev/null
+++ b/suites/debug/fail.py
@@ -0,0 +1,5 @@
+#!/usr/bin/env python3
+from osmo_gsm_tester.test import *
+
+# This can be used to verify that a test failure is reported properly.
+assert False