[Mistral] Mistral-7B-v0.1 support (#1196)

Co-authored-by: timlacroix <t@mistral.ai>

vllm/engine/llm_engine.py

@@ -86,6 +86,8 @@ class LLMEngine:
 
         self.model_config = model_config
         self.cache_config = cache_config
+        assert self.cache_config.sliding_window == getattr(
+            self.model_config.hf_config, "sliding_window", None)
         self.parallel_config = parallel_config
         self.scheduler_config = scheduler_config
         self.log_stats = log_stats