[Test] Add accuracy test for qwen3-8b-w8a8 (#3799)

### What this PR does / why we need it?
Add accuracy test for qwen3-8b-w8a8

- vLLM version: v0.11.0rc3
- vLLM main:
c9461e05a4

Signed-off-by: hfadzxy <starmoon_zhang@163.com>

tests/e2e/models/configs/Qwen3-8B-W8A8.yaml

@@ -0,0 +1,12 @@
+model_name: "vllm-ascend/Qwen3-8B-W8A8"
+hardware: "Atlas A2 Series"
+tasks:
+- name: "gsm8k"
+  metrics:
+  - name: "exact_match,strict-match"
+    value: 0.80
+  - name: "exact_match,flexible-extract"
+    value: 0.82
+num_fewshot: 5
+enable_thinking: False
+quantization: ascend