Run the Ponos tests in CI

arkindex/project/runtests.py

@@ -20,6 +20,7 @@ def run():
     failures = test_runner.run_tests([
         'arkindex.documents.tests',
         'arkindex.images.tests',
+        'arkindex.ponos.tests',
         'arkindex.project.tests',
         'arkindex.process.tests',
         'arkindex.users.tests',