R1:ada749236a7b

Herald - restore create an audit as an action for commit objects

Summary: I think we accidentally forgot to include this action in D6660.

Test Plan: verified it showed up in the UI to have the action be an audit

Reviewers: chad, epriestley

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D6712