Set drone address to always be the initial network entry point (#1847)

* Set drone address to always be the initial network entry point, so that even when leaders rotate the client can still find the drone

* Extract drone address as a separate argument to bench-tps

* Add drone port to client.sh instead of setting it in bench-tps

* Add drone entrypoint to scripts

* Fix build error

net/remote/remote-sanity.sh

@@ -107,6 +107,7 @@ echo "+++ $entrypointIp: node count ($numNodes expected)"
 
   $solana_bench_tps \
     --network "$entrypointIp:8001" \
+    --drone "$entrypointIp:9900" \
     --identity "$client_id" \
     --num-nodes "$numNodes" \
     $maybeRejectExtraNodes \