Use our own runner to run gpu-provisioner E2E test

[rambohe-ch]

• background:

az login command failed during E2E test because of security policy, the details of error is here: https://github.com/Azure/gpu-provisioner/actions/runs/20321133454/job/58376867165

• solution:

please improve e2e pipeline and use our own runner for e2e tests to avoid security policy, the reference of using our own runner is here: https://msazure.visualstudio.com/CloudNativeCompute/_wiki/wikis/CloudNativeCompute.wiki/628886/Github-Runner-VM-Information