fix sleepmode level2 e2e test

Signed-off-by: wangx700 <wangxin700@huawei.com>

Author: wangx700

.github/workflows/_e2e_test.yaml

@@ -182,7 +182,7 @@ jobs:
           pytest -sv tests/e2e/multicard/test_torchair_graph_mode.py
           pytest -sv tests/e2e/multicard/test_data_parallel.py
           pytest -sv tests/e2e/multicard/test_expert_parallel.py
-          # pytest -sv tests/e2e/multicard/test_external_launcher.py
+          pytest -sv tests/e2e/multicard/test_external_launcher.py
           pytest -sv tests/e2e/multicard/test_single_request_aclgraph.py
           pytest -sv tests/e2e/multicard/test_fused_moe_allgather_ep.py
           pytest -sv tests/e2e/multicard/test_ilama_lora_tp2.py

tests/e2e/multicard/test_external_launcher.py

@@ -154,6 +154,7 @@ def test_external_launcher_and_sleepmode():
     assert proc.returncode == 0
 
 
+@patch.dict(os.environ, {"VLLM_ASCEND_ENABLE_NZ": "0"})
 def test_external_launcher_and_sleepmode_level2():
     script = Path(
         __file__