[None][fix] Fix unterminated process issue for RemoteOpenAIServer (#9490)

Signed-off-by: Junyi Xu <[email protected]>

Author: JunyiXu-nv

tests/unittest/llmapi/apps/openai_server.py

@@ -97,6 +97,8 @@ def _wait_for_server(self, *, url: str, timeout: float):
 
                 time.sleep(0.5)
                 if time.time() - start > timeout:
+                    # Terminate the server to avoid the process keeping running in background after timeout
+                    self.terminate()
                     raise RuntimeError(
                         "Server failed to start in time.") from err