[test] functional test for packages in RPCs

test/functional/test_runner.py

@@ -211,6 +211,7 @@ BASE_SCRIPTS = [
     'mempool_package_onemore.py',
     'rpc_createmultisig.py --legacy-wallet',
     'rpc_createmultisig.py --descriptors',
+    'rpc_packages.py',
     'feature_versionbits_warning.py',
     'rpc_preciousblock.py',
     'wallet_importprunedfunds.py --legacy-wallet',