Fix lock file location on level b1 bash script

scripts/run_tower_level_b1.sh

@@ -12,7 +12,7 @@ DATE=$1
 if [ -z "$DATE" ]; then
    DATE=`date +%Y%m%d`
 fi
-LOCK="${ENV}/locks/${SCRIPT_NAME}.lock"
+LOCK="${LOCKDIR}/${SCRIPT_NAME}.lock"
 logfile="${LOGDIR}/${SCRIPT_NAME}.log"
 
 if [ ! -d $LOGDIR ]; then