Trigger rejection build when releases are marked as broken

Summary: This causes the rejection build to run when releases are explicitly marked as broken.  This is so that broken releases are cleaned up correctly.

Test Plan: Tested it on my local Phabricator instances.

Reviewers: lucasr, waynea, #koi

Reviewed By: waynea, #koi

JIRA Issues: KOI-1045

Differential Revision: https://code.pageuppeople.com/D3653

Risk Rating: 1