R1:b149cb7e99e5

Generate expected schemata for Repository

Summary: Ref T1191. Add specs for repository tables.

Test Plan: Saw ~300 fewer schema warnings.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T1191

Differential Revision: https://secure.phabricator.com/D10575