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/wallet_fallbackfee.py

@@ -32,4 +32,4 @@ class WalletRBFTest(BitcoinTestFramework):
         assert_raises_rpc_error(-6, "Fee estimation failed", lambda: self.nodes[0].sendmany("", {self.nodes[0].getnewaddress(): 1}))
 
 if __name__ == '__main__':
-    WalletRBFTest().main()
+    WalletRBFTest(__file__).main()