Fix cd compatibility with older cfg01 image

Change-Id: Ifd097822174c53c64aea1361cb8bcdb120263104
diff --git a/config-drive/master_config.sh b/config-drive/master_config.sh
index 2868924..11c2ab1 100644
--- a/config-drive/master_config.sh
+++ b/config-drive/master_config.sh
@@ -72,7 +72,7 @@
 apt-get update
 apt-get install -y $FORMULAS
 rm -r /srv/salt/reclass/classes/service/*
-cd /srv/salt/reclass/classes/service/;ls /usr/share/salt-formulas/reclass/service/ -1 | xargs -I{} ln -s /usr/share/salt-formulas/reclass/service/{};cd
+cd /srv/salt/reclass/classes/service/;ls /usr/share/salt-formulas/reclass/service/ -1 | xargs -I{} ln -s /usr/share/salt-formulas/reclass/service/{};cd /root
 
 salt-call saltutil.refresh_pillar
 salt-call saltutil.sync_all