add dlc-vllm to autopatch (#5208)

Author: jinyan-li1

eks_infrastructure/patch_hosts.json

@@ -5,6 +5,7 @@
     ],
     "eks_clusters": [
         "dlc-pytorch",
-        "dlc-tensorflow"
+        "dlc-tensorflow",
+        "dlc-vllm"
     ]
 }