underscore instead of hyphen in 'cord_apps' dirname

Change-Id: I7ea14651bf818934b30ec2913b990ac59f808ef7
diff --git a/scripts/single-node-pod.sh b/scripts/single-node-pod.sh
index d444a93..a7c7b1c 100755
--- a/scripts/single-node-pod.sh
+++ b/scripts/single-node-pod.sh
@@ -17,7 +17,7 @@
     rm -rf ~/.juju
     rm -f ~/.ssh/known_hosts
     rm -rf ~/platform-install
-    rm -rf ~/cord-apps
+    rm -rf ~/cord_apps
     rm -rf ~/.ansible_async
 
     echo "Cleaning up libvirt/dnsmasq"