- nbd/server: CVE-2024-7409: Close stray clients at server-stop
- nbd/server: CVE-2024-7409: Drop non-negotiating clients
- nbd/server: CVE-2024-7409: Cap default max-connections to 100
- nbd/server: Plumb in new args to nbd_client_add()
- nbd: Minor style and typo fixes
Signed-off-by: Jiabo Feng <fengjiabo1@huawei.com>