Update testnet scripts to use release tar ball (#1660)

* Update testnet scripts to use release tar ball

* use curl instead of s3cmd

net/remote/remote-client.sh

@@ -35,7 +35,7 @@ snap)
   solana_bench_tps=/snap/bin/solana.bench-tps
   solana_keygen=/snap/bin/solana.keygen
   ;;
-local)
+local|tar)
   PATH="$HOME"/.cargo/bin:"$PATH"
   export USE_INSTALL=1
   export SOLANA_DEFAULT_METRICS_RATE=1

net/remote/remote-node.sh

@@ -77,7 +77,7 @@ snap)
 
   echo "Succeeded in ${SECONDS} seconds"
   ;;
-local)
+local|tar)
   PATH="$HOME"/.cargo/bin:"$PATH"
   export USE_INSTALL=1
   export RUST_LOG

net/remote/remote-sanity.sh

@@ -65,7 +65,7 @@ snap)
   client_id=~/snap/solana/current/config/client-id.json
 
   ;;
-local)
+local|tar)
   PATH="$HOME"/.cargo/bin:"$PATH"
   export USE_INSTALL=1
   entrypointRsyncUrl="$entrypointIp:~/solana"