R1:1c454ea6d97a

Add commits/audits to Asana bridge

Summary: Ref T2852. Adds sync for commits/audits.

Test Plan: {F51660}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2852

Differential Revision: https://secure.phabricator.com/D6573