Use bash to schedule queries

[davidstanke]

As seen in #47, using Python to set up the scheduled queries is fragile. I had a better time calling the gcloud CLI directly from bash. Let's replace /queries/schedule.py with a bash script.

It's important to preserve the ability to re-run the schedule setter-upper any time (independent of setup.sh), so this script should be an independent module that setup.sh will invoke.