Merge bitcoin/bitcoin#33001: test: Do not pass tests on unhandled exceptions

faa3e68 test: Log KeyboardInterrupt as exception (MarcoFalke)
fa30b34 test: Do not pass tests on unhandled exceptions (MarcoFalke)

Pull request description:

  Currently the functional tests are problematic, because they pass, even if they encounter an unhanded exception.

  Fix this by handling all exceptions: Catch `BaseException` as fallback and mark it as failure.

  Can be tested via:

  ```diff
  diff --git a/test/functional/wallet_disable.py b/test/functional/wallet_disable.py
  index da6e5d4..ecc41fb041 100755
  --- a/test/functional/wallet_disable.py
  +++ b/test/functional/wallet_disable.py
  @@ -19,6 +19,7 @@ class DisableWalletTest (BitcoinTestFramework):
           self.wallet_names = []

       def run_test (self):
  +        import sys;sys.exit("fatal error")
           # Make sure wallet is really disabled
           assert_raises_rpc_error(-32601, 'Method not found', self.nodes[0].getwalletinfo)
           x = self.nodes[0].validateaddress('3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy')
  ```

  Previously, the test would pass. With this patch, it would fail.

ACKs for top commit:
  enirox001:
    Looks good to me—ACK faa3e68
  stickies-v:
    re-ACK faa3e68
  pablomartin4btc:
    tACK faa3e68

Tree-SHA512: 11ecd5201982e2c776e48d98834b17c15a415306a95524bc702daeba20a316aac797748e9592be8db575597804f149ee7ef104416037cc9e5891758625810e2d

Author: fanquake

test/functional/test_framework/test_framework.py

@@ -194,26 +194,14 @@ def main(self):
             else:
                 self.run_test()
 
-        except JSONRPCException:
-            self.log.exception("JSONRPC error")
-            self.success = TestStatus.FAILED
         except SkipTest as e:
             self.log.warning("Test Skipped: %s" % e.message)
             self.success = TestStatus.SKIPPED
-        except AssertionError:
-            self.log.exception("Assertion failed")
-            self.success = TestStatus.FAILED
-        except KeyError:
-            self.log.exception("Key error")
-            self.success = TestStatus.FAILED
         except subprocess.CalledProcessError as e:
-            self.log.exception("Called Process failed with '{}'".format(e.output))
-            self.success = TestStatus.FAILED
-        except Exception:
-            self.log.exception("Unexpected exception caught during testing")
+            self.log.exception(f"Called Process failed with stdout='{e.stdout}'; stderr='{e.stderr}';")
             self.success = TestStatus.FAILED
-        except KeyboardInterrupt:
-            self.log.warning("Exiting after keyboard interrupt")
+        except BaseException:
+            self.log.exception("Unexpected exception")
             self.success = TestStatus.FAILED
         finally:
             exit_code = self.shutdown()