Update Phabricator for new daemon pool changes

Summary:
Ref T12298. This updates bin/phd for minor changes to daemon configuration. In particular:

• Every daemon now has an autoscale pool (for trigger/pull, the maximum pool size is 1).
• Pools now have labels to make debugging a little easier.
• Some minor structural changes.

Test Plan: See D17389.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T12298

Differential Revision: https://secure.phabricator.com/D17390