[CI/UT] Unify model usage via ModelScope in CI (#1207)

### What this PR does / why we need it?
Unify Model Usage via ModelScope

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
CI passed

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

.github/workflows/vllm_ascend_test_pd.yaml

@@ -64,8 +64,7 @@ jobs:
         --device /dev/devmm_svm
         --device /dev/hisi_hdc
       env:
-        HF_ENDPOINT: https://hf-mirror.com
-        HF_TOKEN: ${{ secrets.HF_TOKEN }}
+        VLLM_USE_MODELSCOPE: True
     steps:
       - name: Check npu and CANN info
         run: |