pod deletion failing on network namespace https://github.com/containerd/containerd/issues/3667解决问题:```echo 1 > /proc/sys/fs/may_detach_mounts```

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剑廿三 (@BladeW) 2023-11-28 15:46:07.492136073 +0800 CST

pod deletion failing on network namespace

https://github.com/containerd/containerd/issues/3667

解决问题:
```
echo 1 > /proc/sys/fs/may_detach_mounts
```