[TEST]Add aisbench log and A2 cases (#3841)

### What this PR does / why we need it?
This PR adds 2 more A2 caces which we need to test daily. It also
enhances the logging for aisbench test failures to improve issues
identification
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
By running the test

- vLLM version: v0.11.0rc3
- vLLM main:
https://github.com/vllm-project/vllm/commit/releases/v0.11.1

---------

Signed-off-by: jiangyunfan1 <jiangyunfan1@h-partners.com>

tests/e2e/nightly/models/test_deepseek_r1_0528_w8a8.py

@@ -133,4 +133,7 @@ async def test_models(model: str, mode: str) -> None:
         if mode in ["single", "no_chunkprefill"]:
             return
         # aisbench test
-        run_aisbench_cases(model, port, aisbench_cases)
+        run_aisbench_cases(model,
+                           port,
+                           aisbench_cases,
+                           server_args=server_args)