feat: add test cases to check vGPU license status

[shvbsle]

Issue #, if available:

Description of changes:

1. A complementary test case for EKS Nvidia GPU AMIs that support vGPU software:
   fix(al2023): install grid drivers from ec2 grid runfile awslabs/amazon-eks-ami#2450
2. Increased the timeout for unit-tests to 10-minutes since unit-tests kept exceeding the default timeout of 5 minutes by a few seconds as seen below. This causes flaky unit-test behavior.

This unit-test checks if a vGPU instances have nvidia vGPU drivers with a valid Licensed

Testing done:

1. unit-tests pass on non-vGPU instances and skip the vGPU tests:

> go test ./nvidia --test.timeout=60m --test.v --test.run=^TestSingleNodeUnitTest$/unit-test --nvidiaTestImage=${TEST_IMAGE}  --nodeType=g5.8xlarge --tags=e2e
=== RUN   TestSingleNodeUnitTest
=== RUN   TestSingleNodeUnitTest/unit-test
=== RUN   TestSingleNodeUnitTest/unit-test/Unit_test_Job_succeeds
=== NAME  TestSingleNodeUnitTest/unit-test
    unit_test.go:84: Test log for unit-test-job:
    unit_test.go:85: # Running tests in gpu_unit_tests/tests/test_basic.sh
        ok - test_01_device_query
        ok - test_02_vector_add
        ok - test_03_nvbandwidth
        ok - test_04_dcgm_diagnostics
        # Running tests in gpu_unit_tests/tests/test_sysinfo.sh
        ok - test_numa_topo_topo
        ok - test_nvidia_gpu_count
          % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                         Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
        ok - test_nvidia_gpu_throttled
        ok - test_nvidia_gpu_unused
        ok - test_nvidia_persistence_status
        ok - test_nvidia_smi_topo
          % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                         Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
        ok - test_nvidia_vgpu_license_status # skip This test only applies to vGPU instances (g6f.*, gr6f.*)
        
--- PASS: TestSingleNodeUnitTest (370.10s)
    --- PASS: TestSingleNodeUnitTest/unit-test (370.10s)
        --- PASS: TestSingleNodeUnitTest/unit-test/Unit_test_Job_succeeds (370.02s)
PASS
ok      github.com/aws/aws-k8s-tester/test/cases/nvidia 382.604s

2. Unit tests pass on g6f.4xlarge instance with vGPU

·> go test ./nvidia --test.timeout=60m --test.v --test.run=^TestSingleNodeUnitTest$/unit-test --nvidiaTestImage=${TEST_IMAGE}  --nodeType=g6f.4xlarge --tags=e2e
=== RUN   TestSingleNodeUnitTest
=== RUN   TestSingleNodeUnitTest/unit-test
=== RUN   TestSingleNodeUnitTest/unit-test/Unit_test_Job_succeeds
=== NAME  TestSingleNodeUnitTest/unit-test
    unit_test.go:84: Test log for unit-test-job:
    unit_test.go:85: # Running tests in gpu_unit_tests/tests/test_basic.sh
        ok - test_01_device_query
        ok - test_02_vector_add
        ok - test_03_nvbandwidth
        ok - test_04_dcgm_diagnostics # skip This test does not apply to vGPU instances (g6f.*, gr6f.*)
        # Running tests in gpu_unit_tests/tests/test_sysinfo.sh
        ok - test_numa_topo_topo
        ok - test_nvidia_gpu_count
        ok - test_nvidia_gpu_throttled # skip This test does not apply to vGPU instances (g6f.*, gr6f.*)
        ok - test_nvidia_gpu_unused
        ok - test_nvidia_persistence_status
        ok - test_nvidia_smi_topo
        ok - test_nvidia_vgpu_license_status
        
--- PASS: TestSingleNodeUnitTest (155.13s)
    --- PASS: TestSingleNodeUnitTest/unit-test (155.13s)
        --- PASS: TestSingleNodeUnitTest/unit-test/Unit_test_Job_succeeds (155.02s)
PASS
ok      github.com/aws/aws-k8s-tester/test/cases/nvidia 168.188s

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.