bench-tps will now generate an ephemeral identity if not provided with one

Also simplify scripts as a result

multinode-demo/client.sh

@@ -20,10 +20,7 @@ usage() {
 }
 
 if [[ -z $1 ]]; then # default behavior
-  mkdir -p config-client/
-  $solana_keygen -o config-client/client-id.json
   $solana_bench_tps \
-    --identity config-client/client-id.json \
     --network 127.0.0.1:8001 \
     --drone 127.0.0.1:9900 \
     --duration 90 \

multinode-demo/common.sh

@@ -133,5 +133,4 @@ tune_networking() {
 SOLANA_CONFIG_DIR=${SNAP_DATA:-$PWD}/config
 SOLANA_CONFIG_PRIVATE_DIR=${SNAP_DATA:-$PWD}/config-private
 SOLANA_CONFIG_VALIDATOR_DIR=${SNAP_DATA:-$PWD}/config-validator
-SOLANA_CONFIG_CLIENT_DIR=${SNAP_USER_DATA:-$PWD}/config-client