Abort on error

fix.sh

@@ -3,5 +3,9 @@
 for template in $(ls -1 *.json); do
   echo $template
   packer fix $template >/tmp/$$.json
+  if [ $? -ne 0 ]; then
+    cat /tmp/$$.json
+    exit 1
+  fi
   mv /tmp/$$.json $template
 done