R1:af4ebc67c66f

Differental - match "Revision ID:" uri value on domain only

Summary: pre-patch, we match on things like https / http and port... just match domains. Fixes T5693.

Test Plan: arc diff -> arc land and the diff was closed correctly

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T5693

Differential Revision: https://secure.phabricator.com/D10701