clear-config.sh now works with a secondary disk (#5135)

multinode-demo/clear-config.sh

@@ -11,7 +11,9 @@ set -e
 
 for i in "$SOLANA_RSYNC_CONFIG_DIR" "$SOLANA_CONFIG_DIR"; do
   echo "Cleaning $i"
+  rm -rvf "${i:?}/" # <-- $i might be a symlink, rm the other side of it first
   rm -rvf "$i"
   mkdir -p "$i"
 done
 
+setup_secondary_mount