fix: log expected value to compare

Author: itkovian

test/nagios.py

@@ -94,6 +94,7 @@ def test_cache(self):
             except SystemExit as err:
                 line = buffer.getvalue().rstrip()
                 logging.info("Retrieved buffer value: %s", line)
+                logging.info("Expected exit value: %s", nagios_exit)
                 self.assertTrue(err.code == exit_code)
 
             self.assertTrue(line == "%s %s" % (nagios_exit, message))