BitcoinTestFramework() takes a filename now

The repetitive part of this diff can reproduced with:

```bash
sed -i -e 's/\s*().main\s*()/(__file__).main()/' $(git ls-files resources/scenarios/*/*.py)
```

Which mostly comes from this scripted diff from bitcoin/bitcoin:
bitcoin/bitcoin@a047344

Author: davidgumberg

resources/scenarios/commander.py

@@ -317,7 +317,7 @@ def setup(self):
                 except Exception as e:
                     self.log.info(f"Failed to get signet network magic bytes from {node.tank}: {e}")
 
-    def parse_args(self):
+    def parse_args(self, _):
         # Only print "outer" args from parent class when using --help
         help_parser = argparse.ArgumentParser(usage="%(prog)s [options]")
         self.add_options(help_parser)

resources/scenarios/test_scenarios/buggy_failure.py

@@ -21,7 +21,7 @@ def run_test(self):
 
 
 def main():
-    Failure().main()
+    Failure(__file__).main()
 
 
 if __name__ == "__main__":

resources/scenarios/test_scenarios/connect_dag.py

@@ -118,7 +118,7 @@ def assert_connection(self, connector, connectee_index, connection_type: Connect
 
 
 def main():
-    ConnectDag().main()
+    ConnectDag(__file__).main()
 
 
 if __name__ == "__main__":

resources/scenarios/test_scenarios/generate_one_allnodes.py

@@ -26,7 +26,7 @@ def run_test(self):
 
 
 def main():
-    GenOneAllNodes().main()
+    GenOneAllNodes(__file__).main()
 
 
 if __name__ == "__main__":

resources/scenarios/test_scenarios/p2p_interface.py

@@ -53,7 +53,7 @@ def run_test(self):
 
 
 def main():
-    GetdataTest().main()
+    GetdataTest(__file__).main()
 
 
 if __name__ == "__main__":

resources/scenarios/test_scenarios/pyln_connect.py

@@ -57,7 +57,7 @@ def run_test(self):
 
 
 def main():
-    PyLNConnect().main()
+    PyLNConnect(__file__).main()
 
 
 if __name__ == "__main__":

resources/scenarios/test_scenarios/signet_grinder.py

@@ -12,7 +12,7 @@ def run_test(self):
 
 
 def main():
-    SignetGrinder().main()
+    SignetGrinder(__file__).main()
 
 
 if __name__ == "__main__":