Pregenerate the database schema we should use for most tests.
Currently, Cockroach is slow with regards to migration and it's
better if it happens in as few transactions as possible.
This reduces test time from ~21min to ~15min.
Change-Id: Ife8117053e6b9ecf3c93fe63677edf15d4d7c254
Limit bucket name lookup to date range of the calling methods since we only need distinct bucket names for that time period.
Adds new index and removes an index specific to project ID since it is no longer needed.
Change-Id: Ic07bbfb1c32280e0c0e39f8da020b284e1e5d974