[ci] fix url strips in smg ci (#16548)

Co-authored-by: Chang Su <chang.s.su@oracle.com>

sgl-model-gateway/e2e_test/router/test_mmlu.py

@@ -36,10 +36,9 @@ class TestMMLU:
         Note: setup_backend fixture already waits for workers to be ready.
         """
         backend, model, client, *_ = setup_backend
-        base_url = str(client.base_url).rstrip("/v1")
 
         args = SimpleNamespace(
-            base_url=base_url,
+            base_url=str(client.base_url),
             model=model,
             eval_name="mmlu",
             num_examples=64,
@@ -60,10 +59,9 @@ class TestMMLU:
         significant results.
         """
         backend, model, client, *_ = setup_backend
-        base_url = str(client.base_url).rstrip("/v1")
 
         args = SimpleNamespace(
-            base_url=base_url,
+            base_url=str(client.base_url),
             model=model,
             eval_name="mmlu",
             num_examples=128,

sgl-model-gateway/e2e_test/router/test_pd_mmlu.py

@@ -44,10 +44,9 @@ class TestPDMMLU:
         accuracy meets threshold (>= 0.65).
         """
         backend, model, client, *_ = setup_backend
-        base_url = str(client.base_url).rstrip("/v1")
 
         args = SimpleNamespace(
-            base_url=base_url,
+            base_url=str(client.base_url),
             model=model,
             eval_name="mmlu",
             num_examples=64,