[Test] Add accuracy test for qwen3-30b-a3b-w8a8 (#3807)

### What this PR does / why we need it?
Add accuracy test for qwen3-30b-a3b-w8a8
This PR depends on https://github.com/vllm-project/vllm-ascend/pull/3799

### How was this patch tested?
qwen3-30b-a3b-w8a8 accuarcy test ok:

https://github.com/vllm-project/vllm-ascend/actions/runs/19062045267/job/54443732877?pr=3807
- vLLM version: v0.11.0
- vLLM main:
83f478bb19

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

tests/e2e/models/configs/Qwen3-30B-A3B-W8A8.yaml

@@ -0,0 +1,16 @@
+model_name: "vllm-ascend/Qwen3-30B-A3B-W8A8"
+hardware: "Atlas A2 Series"
+tasks:
+- name: "gsm8k"
+  metrics:
+  - name: "exact_match,strict-match"
+    value: 0.9
+  - name: "exact_match,flexible-extract"
+    value: 0.8
+num_fewshot: 5
+gpu_memory_utilization: 0.7
+enable_expert_parallel: True
+tensor_parallel_size: 2
+apply_chat_template: False
+fewshot_as_multiturn: False
+quantization: ascend