Prevent the submission of content invalidation requests against DS types that don't have origins (e.g. CLIENT_STEERING).
(cherry picked from commit c06696a6d9ad5f72805aea6211ce3108a25a342d) [ Full content available at: https://github.com/apache/trafficcontrol/pull/2860 ] This message was relayed via gitbox.apache.org for [email protected]
