chore: import upstream snapshot with attribution

doc/source/cluster/doc_code/xgboost_submit.py

@@ -0,0 +1,19 @@
+from ray.job_submission import JobSubmissionClient
+
+client = JobSubmissionClient("http://127.0.0.1:8265")
+
+kick_off_xgboost_benchmark = (
+    # Clone ray. If ray is already present, don't clone again.
+    "git clone https://github.com/ray-project/ray || true; "
+    # Run the benchmark.
+    "python ray/release/train_tests/xgboost_lightgbm/train_batch_inference_benchmark.py"
+    " xgboost --size=100G --disable-check"
+)
+
+
+submission_id = client.submit_job(
+    entrypoint=kick_off_xgboost_benchmark,
+)
+
+print("Use the following command to follow this Job's logs:")
+print(f"ray job logs '{submission_id}' --follow")