qa: Note on test order in test_runner

test/functional/test_runner.py

@@ -130,6 +130,8 @@ BASE_SCRIPTS= [
     'feature_logging.py',
     'node_network_limited.py',
     'conf_args.py',
+    # Don't append tests at the end to avoid merge conflicts
+    # Put them in a random line within the section that fits their approximate run-time
 ]
 
 EXTENDED_SCRIPTS = [