Fixed the issue where the DCU device plugin failed to run on K100

[fourhu]

Fixed the issue where the DCU device plugin failed to run on K100.

[fourhu]

$ kubectl -n kube-system logs -f dcu-device-plugin-daemonset-ljjhl
I1217 13:23:22.557085 2010790 client.go:53] BuildConfigFromFlags failed for file /root/.kube/config: stat /root/.kube/config: no such file or directory using inClusterConfig
panic: unexpected EOF

goroutine 52 [running]:
github.com/HAMi/dcu-vgpu-device-plugin/internal/pkg/dcu.(*Plugin).Start(0xc000522000)
/device-plugin/internal/pkg/dcu/server.go:143 +0x1568
github.com/kubevirt/device-plugin-manager/pkg/dpm.startPlugin({0x19292d5, 0x6}, {{0x1b85d00, 0xc000522000}, {0xc000516030, 0x10}, {0x19292d5, 0x6}, {0xc00052c000, 0x30}, ...})
/device-plugin/vendor/github.com/kubevirt/device-plugin-manager/pkg/dpm/manager.go:185 +0x5e
github.com/kubevirt/device-plugin-manager/pkg/dpm.(*Manager).handleNewPlugins.func1({0x19292d5, 0x6})
/device-plugin/vendor/github.com/kubevirt/device-plugin-manager/pkg/dpm/manager.go:112 +0x314
created by github.com/kubevirt/device-plugin-manager/pkg/dpm.(*Manager).handleNewPlugins in goroutine 1
/device-plugin/vendor/github.com/kubevirt/device-plugin-manager/pkg/dpm/manager.go:107 +0x7f

[fourhu]

Sometimes the obtained Card Series is empty.

[fourhu]

This is the card version information retrieved from the server.

[archlitchi]

/lgtm

thanks