R1:3e992c671372

Add audit, review, and dominion information to "owners.search" API method

Summary:
See PHI439. This fills in additional information about Owners packages.

Also removes dead `primaryOwnerPHID`.

Test Plan: Called `owners.search` and reviewed the results. Grepped for `primaryOwnerPHID`.

Differential Revision: https://secure.phabricator.com/D19207