Clear cron jobs on a "down --clean"
@@ -83,6 +83,7 @@ module TerminateHelper
`rm -rf #{APPSCALE_CONFIG_DIR}/*.pid`
`rm -rf /tmp/ec2/*`
`rm -rf /tmp/*started`
+ `rm -rf /etc/cron.d/appscale-*`
# Delete stored data.
`rm -rf /opt/appscale/cassandra`
