scripted-diff: Add __file__ argument to BitcoinTestFramework.init()

-BEGIN VERIFY SCRIPT-
sed -i -e 's/\s*().main\s*()/(__file__).main()/' $(git ls-files test/functional/*.py)
sed -i -e 's/def __init__(self)/def __init__(self, test_file)/' test/functional/test_framework/test_framework.py
-END VERIFY SCRIPT-

test/functional/rpc_packages.py

@@ -489,4 +489,4 @@ class RPCPackagesTest(BitcoinTestFramework):
         assert_equal(node.getrawmempool(), [chained_txns_burn[0]["txid"]])
 
 if __name__ == "__main__":
-    RPCPackagesTest().main()
+    RPCPackagesTest(__file__).main()