Waive failed case in post-merge

Signed-off-by: qqiao <[email protected]>

Author: EmmaQiaoCh

tests/integration/test_lists/waives.txt

@@ -271,3 +271,4 @@ examples/test_granite.py::test_granite_bf16_lora[granite-3.0-1b-a400m-instruct]
 accuracy/test_disaggregated_serving.py::TestLlama3_1_8BInstruct::test_ctx_pp_gen_tp_asymmetric[MMLU-gen_tp=1-ctx_pp=4] SKIP (https://nvbugs/5431139)
 disaggregated/test_disaggregated.py::test_disaggregated_deepseek_v3_lite_fp8_nixl[DeepSeek-V3-Lite-fp8] SKIP (https://nvbugs/5431127)
 accuracy/test_llm_api_pytorch.py::TestLlama4MaverickInstruct::test_fp8_eagle3[tp8-torch_compile=True] SKIP (https://nvbugs/5427801)
+accuracy/test_disaggregated_serving.py::TestLlama3_1_8BInstruct::test_ctx_pp_gen_tp_asymmetric[MMLU-gen_tp=2-ctx_pp=4] SKIP (https://nvbugs/5434320)