[None][fix] Update tests to use standardized uppercase backend identifiers (#6921)

Signed-off-by: Bo Deng <[email protected]>

Author: bo-nv

tests/integration/defs/accuracy/test_disaggregated_serving.py

@@ -574,13 +574,13 @@ def test_nixl_backend(self):
         ctx_server_config = {
             "disable_overlap_scheduler": True,
             "cache_transceiver_config": {
-                "backend": "nixl"
+                "backend": "NIXL"
             }
         }
         gen_server_config = {
             "disable_overlap_scheduler": True,
             "cache_transceiver_config": {
-                "backend": "nixl"
+                "backend": "NIXL"
             }
         }
         disaggregated_server_config = {
@@ -710,13 +710,13 @@ def test_nixl_backend(self):
         ctx_server_config = {
             "disable_overlap_scheduler": True,
             "cache_transceiver_config": {
-                "backend": "nixl"
+                "backend": "NIXL"
             }
         }
         gen_server_config = {
             "disable_overlap_scheduler": True,
             "cache_transceiver_config": {
-                "backend": "nixl"
+                "backend": "NIXL"
             }
         }
         disaggregated_server_config = {

tests/integration/defs/disaggregated/test_disaggregated.py

@@ -1245,8 +1245,8 @@ def get_config_for_benchmark(model_root, backend):
 def test_disaggregated_benchmark_on_diff_backends(
         disaggregated_test_root, disaggregated_example_root, llm_venv,
         benchmark_model_root, benchmark_root, shared_gpt_path):
-    nixl_config = get_config_for_benchmark(benchmark_model_root, "nixl")
-    ucx_config = get_config_for_benchmark(benchmark_model_root, "ucx")
+    nixl_config = get_config_for_benchmark(benchmark_model_root, "NIXL")
+    ucx_config = get_config_for_benchmark(benchmark_model_root, "UCX")
     temp_dir = tempfile.TemporaryDirectory()
     nixl_config_path = os.path.join(temp_dir.name, "nixl_config.yaml")
     ucx_config_path = os.path.join(temp_dir.name, "ucx_config.yaml")