config: suites_dir and scenarios_dir are now a list of paths

This allows inheriting suites or scenarios from eg. sysmocom/ dir, while
still allowing to apply new suites and scenarios on top.

Change-Id: Icecdae32d400a6b6da2ebf167c1c795f7a74ae96
diff --git a/selftest/suite_test/suitedirB/suiteB/suite.conf b/selftest/suite_test/suitedirB/suiteB/suite.conf
new file mode 100644
index 0000000..3645cd9
--- /dev/null
+++ b/selftest/suite_test/suitedirB/suiteB/suite.conf
@@ -0,0 +1,4 @@
+resources:
+
+defaults:
+  timeout: 60s
diff --git a/selftest/suite_test/suitedirB/suiteB/test_success.py b/selftest/suite_test/suitedirB/suiteB/test_success.py
new file mode 100755
index 0000000..97bb915
--- /dev/null
+++ b/selftest/suite_test/suitedirB/suiteB/test_success.py
@@ -0,0 +1,5 @@
+#!/usr/bin/env python3
+from osmo_gsm_tester.testenv import *
+
+print('I am %r / %r' % (tenv.suite().name(), test.name()))
+