qa: Add getdescriptorinfo functional test

test/functional/test_runner.py

@@ -217,6 +217,7 @@ BASE_SCRIPTS = [
     'feature_config_args.py',
     'rpc_getaddressinfo_labels_purpose_deprecation.py',
     'rpc_getaddressinfo_label_deprecation.py',
+    'rpc_getdescriptorinfo.py',
     'rpc_help.py',
     'feature_help.py',
     'feature_shutdown.py',