R1:72ec4f7a6f4f

Move database configuration into new-style setup checks

Summary: Port the database checks over.

Test Plan: Triggered all the checks via intentional misconfiguration.

Reviewers: chad, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2228

Differential Revision: https://secure.phabricator.com/D4590