Add Job workload support to CRUD benchmarking framework

[diamondpowell]

Summary

Adds Job workload support to the CRUD benchmarking framework — the third and final planned workload method. Unlike deployments/statefulsets which run indefinitely, Jobs are run-to-completion workloads: success means the pod terminated cleanly (succeeded > 0), failure raises immediately.

Branch cleanup note: Rebased and squashed for reviewability. Independent of StatefulSet PR (#1132).

Changes

modules/python/crud/workload_templates/job.yml

• New K8s manifest template using batch/v1 API with restartPolicy: Never
• Uses JOB_COMPLETIONS placeholder, no parallelism (defaults to match completions)

modules/python/crud/azure/node_pool_crud.py

• Add create_job() — same loop pattern as other workloads
• Uses complete condition instead of available/ready since Jobs terminate after completion
• No wait_for_pods_ready — pods exit after job finishes

modules/python/crud/main.py

• Add jobs subparser with --node-pool-name, --number-of-jobs, --completions, --manifest-dir
• Add elif command == "jobs" routing in handle_workload_operations

modules/python/clients/kubernetes_client.py

• Add _check_job_condition and _is_job_condition_met — checks completion_time + succeeded count
• Add wait_for_job_completed with 5-min timeout and 30s polling
• Add Job kind support to apply_manifest, update_manifest, delete_manifest

steps/engine/crud/k8s/execute.yml

• Add jobs script block calling python3 main.py jobs
• Add number_of_jobs and completions parameters

steps/topology/k8s-crud-gpu/execute-crud.yml

• Wire number_of_jobs and completions through to engine step

modules/python/clients/aks_client.py

• Fix: set gpu_profile driver to "None" for non-GPU node pools

Changes since initial PR

modules/python/crud/azure/node_pool_crud.py

• Extract _apply_job() helper from loop body — separates orchestration from execution
• Pod labels now include workload type: nginx-container-deployment-1 vs nginx-container-job-1

modules/python/crud/main.py

• Docstring updated to list supported workload types: (deployment, job)
• Uses workload_common_parser for shared args (--count, --replicas, --manifest-dir, --label-selector), with --completions added on job_parser

steps/engine/crud/k8s/execute.yml

• Workload steps gated to Azure-only: ${{ if eq(parameters.cloud, 'azure') }}:
• --manifest-dir passed conditionally: ${MANIFEST_DIR:+--manifest-dir "$MANIFEST_DIR"}

Notes

• --replicas is inherited from workload_common_parser but unused by jobs — jobs use --completions instead. Left as-is to keep the shared parser simple.

Tests

test_azure_node_pool_crud.py:

• test_create_job_success
• test_create_job_failure
• test_create_job_no_client
• test_create_job_partial_success

test_kubernetes_client.py:

• test_wait_for_condition_job_success — Job completes successfully
• test_wait_for_condition_job_timeout — fails within timeout
• test_wait_for_condition_job_not_found — not found, returns failure

Dependencies

Based on test-refactor (PR #879) — must merge first. Independent of StatefulSet PR (#1132).