check OS network limits when starting validator (#20874)

multinode-demo/bootstrap-validator.sh

@@ -124,6 +124,7 @@ args+=(
   --vote-account "$vote_account"
   --rpc-faucet-address 127.0.0.1:9900
   --no-poh-speed-test
+  --no-os-network-limits-test
   --no-wait-for-vote-to-start-leader
 )
 default_arg --gossip-port 8001