fix: what bandit and the remaining lint rules found

- The six except Exception: pass (REST logout, the extra-ports lookup, the
  per-port detail in get_interfaces, closing CLI and REST sessions) now log
  at debug level (B110), so a swallowed failure leaves a trace.
- nosec for comparing a reported address with 0.0.0.0 (B104) and for the
  empty password field of get_users (B105, now a named constant); both are
  false positives.
- A long error message is split into adjacent f-strings; the unused ARP
  entry type is named _entry_type.
- tests: the failed-open test expects ConnectionException instead of any
  Exception; raise ... from exc.

tests/unit/test_driver.py

@@ -535,7 +535,7 @@ class TestDriverTransportDetection:
         with patch("napalm_procurve.procurve.ProcurveApiClient.probe", return_value=(None, None)):
             with patch("napalm_procurve.procurve.ConnectHandler", side_effect=Exception("no conn")):
                 drv = ProcurveDriver("192.168.0.1", "manager", "secret")
-                with pytest.raises(Exception):
+                with pytest.raises(ConnectionException):
                     drv.open()
 
     def test_auth_failure_names_why_earlier_transports_failed(self):