fix: nil pointer when set node other resources

[TymonLee]

It is possible that NewNodeInfo(node *v1.Node) in node_info.go received a nil node argument. In this situation, volcano-scheduler will crash because of nil pointer dereference.

[Monokaix]

The method NewGPUDevices below it has already checked node not nil: )

[TymonLee]

The method NewGPUDevices below it has already checked node not nil: )

But it will return nil and ni.Others[vgpu.DeviceName] will be set "hamivgpu=nil". In such situation, scheduler could also panic if addResource() or subResource() is called.

[Monokaix]

Ok，please sign off your commit.

[TymonLee]

Ok，please sign off your commit.

OK, done.

[Monokaix]

/lgtm

[Monokaix]

cc @hwdef @lowang-bh

[william-wang]

/approve

[volcano-sh-bot]

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