Move cache dir to /var/cache/devstack
diff --git a/build_pxe_boot.sh b/build_pxe_boot.sh
index 4f59ed6..4feb14d 100755
--- a/build_pxe_boot.sh
+++ b/build_pxe_boot.sh
@@ -20,7 +20,7 @@
 fi
 
 DEST_DIR=${1:-/tmp}/tftpboot
-PXEDIR=${PXEDIR:-/root/pxe}
+PXEDIR=${PXEDIR:-/var/cache/devstack/pxe}
 OPWD=`pwd`
 PROGDIR=`dirname $0`