Use default if timeout in napalm profile is None

python/nav/napalm.py

@@ -45,7 +45,7 @@ def connect(host: Host, profile: manage.ManagementProfile) -> NetworkDriver:
  hostname=hostname,
  username=config.get("username"),
  password=config.get("password"),
- timeout=config.get("timeout", DEFAULT_TIMEOUT_SECONDS),
+ timeout=config.get("timeout") or DEFAULT_TIMEOUT_SECONDS,
  optional_args=optional_args,
  )
  # Let temporary file live as long as the device connection exists