Merge bitcoin/bitcoin#29068: test: Actually fail when a python unit test fails

fa0534d test: Actually fail when a python unit test fails (MarcoFalke)

Pull request description:

  Currently python unit test failures are ignored.

  Fix this.

ACKs for top commit:
  theStack:
    ACK fa0534d
  BrandonOdiwuor:
    ACK fa0534d

Tree-SHA512: c136be4c8d861d966f380e04d5d14b711b90c4011101302dae1332496e493207c5c673927586ed35b02b61a0b050bf45053a31e6ff766ec52f1d054caf0985e2

Author: fanquake

test/functional/test_runner.py

@@ -565,8 +565,7 @@ def run_tests(*, test_list, src_dir, build_dir, tmpdir, jobs=1, enable_coverage=
         test_framework_tests.addTest(unittest.TestLoader().loadTestsFromName("test_framework.{}".format(module)))
     result = unittest.TextTestRunner(verbosity=1, failfast=True).run(test_framework_tests)
     if not result.wasSuccessful():
-        logging.debug("Early exiting after failure in TestFramework unit tests")
-        sys.exit(False)
+        sys.exit("Early exiting after failure in TestFramework unit tests")
 
     flags = ['--cachedir={}'.format(cache_dir)] + args