deploy-test: another python3 compatibility fix

fixes TypeError: cannot marshal <class 'dict_keys'> objects

software/erp5testnode/testsuite/deploy-test/runTestSuite.py

@@ -189,7 +189,7 @@ def main():
 
   assert revision == test_result.revision, (revision, test_result.revision)
   while suite.acquire():
-    test = test_result.start(suite.running.keys())
+    test = test_result.start(list(suite.running.keys()))
     if test is not None:
       suite.start(test.name, lambda status_dict,
                   __test=test: __test.stop(**status_dict))