fix: what bandit and the remaining lint rules found

- Netgear Plus: a failed logout on close() now logs at debug level (B110),
  so a swallowed failure leaves a trace; the module gets its logger.
- nosec for the firmware CDN probe (B310): the URL is built on the fixed
  https base _FW_CDN_BASE, model and version only fill its path, so no
  file:// or custom scheme can reach urlopen.
- nosec for the empty password in get_users (B105): it is NAPALM's field,
  the CLI never shows a password; a false positive.
- The v7 LLDP table in a docstring loses one leading space per line to fit
  line length 100.
- tests: a second TestGetLldpNeighbors class shadowed the first, whose two
  tests never ran; the v7 one is now TestGetLldpNeighborsV7 and both run
  (and pass). raise ... from exc in the netmiko stand-in.

napalm_netgear/netgear_plus.py

@@ -21,6 +21,7 @@ The ``username`` parameter is accepted but ignored.
 
 from __future__ import annotations
 
+import logging
 import threading
 import time
 from typing import Any
@@ -28,6 +29,8 @@ from typing import Any
 from napalm.base.exceptions import ConnectionException
 from napalm_device_types import FingerprintRule, FirmwareOfferMixin, SwitchDriver
 
+logger = logging.getLogger(__name__)
+
 # ---------------------------------------------------------------------------
 # Firmware update check — module-level constants and cache
 # ---------------------------------------------------------------------------
@@ -69,7 +72,8 @@ def _fw_cdn_exists(model: str, version: str) -> bool:
     ctx = ssl.create_default_context()
     req = urllib.request.Request(url, method="HEAD", headers={"User-Agent": "Mozilla/5.0"})
     try:
-        with urllib.request.urlopen(req, timeout=3, context=ctx):
+        # The URL is always https on _FW_CDN_BASE; model and version only fill the path.
+        with urllib.request.urlopen(req, timeout=3, context=ctx):  # nosec B310
             return True
     except Exception:
         return False
@@ -220,7 +224,7 @@ class NetgearPlusDriver(FirmwareOfferMixin, SwitchDriver):
             try:
                 self._connector.delete_login_cookie()
             except Exception:
-                pass
+                logger.debug("Logging out of the switch failed: ignored", exc_info=True)
             self._connector = None
         self._switch_infos_cache = None