[TRTLLM-8638][fix] Add failed cases into waives.txt (#10367)

Signed-off-by: xinhe-nv <200704525+xinhe-nv@users.noreply.github.com>

Author: xinhe-nv

tests/integration/test_lists/waives.txt

@@ -507,3 +507,4 @@ cpp/test_e2e.py::test_model[-mamba-86] SKIP (https://nvbugs/5781665)
 unittest/llmapi/test_llm_multi_gpu_pytorch.py::test_tinyllama_logits_processor_tp2pp2 SKIP (https://nvbugs/5781731)
 accuracy/test_disaggregated_serving.py::TestLlama3_1_8BInstruct::test_tp_pp_symmetric[GSM8K-tp2pp2] SKIP (https://nvbugs/5756008)
 accuracy/test_llm_api_pytorch.py::TestLlama3_1_8BInstruct::test_guided_decoding_4gpus[llguidance] SKIP (https://nvbugs/5756008)
+disaggregated/test_auto_scaling.py::test_worker_restart[etcd-round_robin] SKIP (https://nvbugs/5776445)