feat(test): include index in test assertions

- Updated test cases to include `index` in the `want` structure.
- Ensured better coverage of scenarios involving `index` handling.

chore: update .gitignore to ignore build and test output

- Added `_output/` directory to `.gitignore` to ignore generated build artifacts.
- Added `coverage.out` to `.gitignore` to ignore test coverage reports.

.gitignore

@@ -8,4 +8,6 @@ libvgpu.so
 .idea
 vendor
 license
-vgpuvalidator
+vgpuvalidator
+_output/
+coverage.out

pkg/device/ascend/device_test.go

@@ -312,8 +312,8 @@ func Test_PatchAnnotations(t *testing.T) {
 				},
 			},
 			want: map[string]string{
-				util.InRequestDevices[dev.config.CommonWord]: "device-0,Ascend,8738,1:;",
-				util.SupportDevices[dev.config.CommonWord]:   "device-0,Ascend,8738,1:;",
+				util.InRequestDevices[dev.config.CommonWord]: "device-0,Ascend,8738,1,0:;",
+				util.SupportDevices[dev.config.CommonWord]:   "device-0,Ascend,8738,1,0:;",
 				"predicate-time":        strconv.FormatInt(time.Now().Unix(), 10),
 				"huawei.com/Ascend910A": "[{\"UUID\":\"device-0\",\"temp\":\"vir08\"}]",
 			},

pkg/device/iluvatar/device_test.go

@@ -129,8 +129,8 @@ func TestPatchAnnotations(t *testing.T) {
 				},
 			},
 			expected: map[string]string{
-				util.InRequestDevices[IluvatarGPUDevice]: "k8s-gpu-iluvatar-0,Iluvatar,0,0:;",
-				util.SupportDevices[IluvatarGPUDevice]:   "k8s-gpu-iluvatar-0,Iluvatar,0,0:;",
+				util.InRequestDevices[IluvatarGPUDevice]: "k8s-gpu-iluvatar-0,Iluvatar,0,0,0:;",
+				util.SupportDevices[IluvatarGPUDevice]:   "k8s-gpu-iluvatar-0,Iluvatar,0,0,0:;",
 				"iluvatar.ai/gpu-assigned":               "false",
 				"iluvatar.ai/predicate-time":             strconv.FormatInt(time.Now().UnixNano(), 10),
 				IluvatarDeviceSelection + "0":            "0",

pkg/device/nvidia/device_test.go

@@ -504,8 +504,8 @@ func Test_PatchAnnotations(t *testing.T) {
 				},
 			},
 			want: map[string]string{
-				util.InRequestDevices[NvidiaGPUDevice]: "nvidia-device-0,NVIDIA,2000,1:;",
-				util.SupportDevices[NvidiaGPUDevice]:   "nvidia-device-0,NVIDIA,2000,1:;",
+				util.InRequestDevices[NvidiaGPUDevice]: "nvidia-device-0,NVIDIA,2000,1,0:;",
+				util.SupportDevices[NvidiaGPUDevice]:   "nvidia-device-0,NVIDIA,2000,1,0:;",
 			},
 		},
 		{