Allow Drydock logs to be associated with RepositoryOperation objects

Summary: Ref T13197. See PHI873. I want to give RepositoryOperation objects access to Drydock logging like leases, resources, and blueprints currently have. This just does the schema/query changes, no actual UI or new logging yet.

Test Plan: Ran storage upgrade, poked around the UI looking for anything broken.

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13197

Differential Revision: https://secure.phabricator.com/D19671