Summary:
Ref T2783. This populates the following fields in DiffusionQueryCommitsConduitAPIMethod using DiffusionLowLevelCommitQuery when `bypassCache` is set to true:
* `authorName`
* `authorEmail`
* `committerName`
* `committerEmail`
* `message`
* `hashes`
The original outline called for `authorPHID` and `committerPHID` as well (but no `message` field). As far as I can tell, the PHIDs aren't actual a property on `DiffusionCommitRef`, and since the intention of this is to be able to populate a `DiffusionCommitRef`, I haven't included them. Let me know if we really do need the PHIDs here.
Test Plan: Tested using 3 Phabricator instances (one web, one taskmaster and one storage). The web and taskmaster tiers are directed at the Conduit API of the storage tier. Made a `diffusion.querycommits` from the Conduit app on the web tier instance and saw the data populated from the raw VCS data (located on the storage tier).
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Maniphest Tasks: T2783
Differential Revision: https://secure.phabricator.com/D10399