Log peak ramdisk usage

Author: zaneb

data/data/bootstrap/files/usr/local/bin/node-image-pull.sh.template

@@ -90,6 +90,7 @@ ostree checkout --repo "${ostree_repo}" ${hardlink} coreos/node-image "${ostree_
 
 # in the assisted-installer case, nuke the temporary repo to save RAM
 if grep -q coreos.liveiso= /proc/cmdline; then
+    df -h /run/ephemeral
     echo "Deleting temporary repo"
     rm -rf "${ostree_repo}"
 fi