R1:2820fdc89b60

Add PHIDs to Herald Rules

Summary: Ref T2769. Precursor to various Herald-related modernizations.

Test Plan: Ran migration; loaded Herald via web.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2769

Differential Revision: https://secure.phabricator.com/D6648