Exclusive gpu usage

Job description

To allocate an exlusive GPU, you need only assign volcano.sh/vgpu-number without any other volcano.sh/xxx fields, as the example below:

apiVersion: v1
kind: Pod
metadata:
  name: test1
spec:
  restartPolicy: OnFailure
  schedulerName: volcano
  containers:
  - image: ubuntu:20.04
    name: pod1-ctr
    command: ["sleep"]
    args: ["100000"]
    resources:
      limits:
        volcano.sh/vgpu-number: 1