testsuite: record ID 450 for CMS author lists

* Fixes CMS author list record that did not have any record ID.  Uses
  record ID 450 now, which is close to "Data Policy" records.
  (see #607) (see PR #536)

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
CMS: update of `cms-eventdisplay-files.xml`

* (closes #608) (PR #610)