[Misc] Add In-Container restart capability through supervisord for sagemaker entrypoint (#28502)

Signed-off-by: Shen Teng <sheteng@amazon.com>
Signed-off-by: HappyAmazonian <91216626+HappyAmazonian@users.noreply.github.com>

examples/online_serving/sagemaker-entrypoint.sh

@@ -21,4 +21,4 @@ while IFS='=' read -r key value; do
 done < <(env | grep "^${PREFIX}")
 
 # Pass the collected arguments to the main entrypoint
-exec vllm serve "${ARGS[@]}"
+exec standard-supervisor vllm serve "${ARGS[@]}"