[3/N][CI/UT] add spec decode e2e UT

Co-authored-by: mengwei805 <[email protected]>
Co-authored-by: MengqingCao <[email protected]>
Signed-off-by: mengwei805 <[email protected]>

Author: mengwei805

.github/workflows/vllm_ascend_test.yaml

@@ -129,7 +129,7 @@ jobs:
 
       - name: Run vllm-project/vllm-ascend e2e test
         run: |
-          pytest -sv tests/test_offline_inference.py
+          pytest -sv
 
       # only run test on spec decode when the related code changed
       - name: Check for changes in Speculative Decode
@@ -148,7 +148,7 @@ jobs:
       - name: Run vllm-project/vllm-ascend key feature test
         if: steps.filter.outputs.speculative_tests_changed
         run: |
-          pytest -sv tests/spec_decode
+          pytest -sv tests/spec_decode/e2e/test_eagle_correctness.py
 
       - name: Run vllm-project/vllm test
         run: |