This allows a per-project exceptions file. Once this is released, the current static file list can be moved to an openstack-manuals specific file. This is needed to ignore some files in the database-api repository, see https://review.openstack.org/67716 and https://review.openstack.org/#/c/67585. Change-Id: Iab1c7b11680d9785b202b80fa80805b2069ea896 Related-Bug: #1270267