Add autoscaler script
Add autoscaler script

This is a pretty hacky script, with no ability to configure it, etc.
However, it's probably better to be a hacky script in version control
rather than a hacky script that only exists in Todd's home directory.

umbrant/dist_test,umbrant/dist_test,xiao-chen/dist_test,xiao-chen/dist_test,umbrant/dist_test,cloudera/dist_test,umbrant/dist_test,cloudera/dist_test,xiao-chen/dist_test,cloudera/dist_test,cloudera/dist_test,xiao-chen/dist_test