Fix bash scripts:

* Use wallet name everywhere
* Update drone to use mint.json

multinode-demo/wallet.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+#
+# usage: $0 <rsync network path to solana repo on leader machine>"
+#
+
+here=$(dirname "$0")
+# shellcheck source=multinode-demo/common.sh
+source "$here"/common.sh
+SOLANA_CONFIG_DIR=config-client-demo
+
+leader=${1:-${here}/..}  # Default to local solana repo
+
+rsync_leader_url=$(rsync_url "$leader")
+
+set -ex
+mkdir -p $SOLANA_CONFIG_DIR
+rsync -vPz "$rsync_leader_url"/config/leader.json $SOLANA_CONFIG_DIR/
+rsync -vPz "$rsync_leader_url"/config/mint.json $SOLANA_CONFIG_DIR/
+
+# shellcheck disable=SC2086 # $solana_simple_client_demo should not be quoted
+exec $solana_wallet \
+  -l $SOLANA_CONFIG_DIR/leader.json -m $SOLANA_CONFIG_DIR/mint.json -d