(PDB-467) Collapse versioned files for http tests

Signed-off-by: Ken Barber <ken@bob.sh>
(PDB-467) Move v4 files into shared ones in prep

Signed-off-by: Ken Barber <ken@bob.sh>
(PDB-467) Merge catalogs.clj versioning tests

Signed-off-by: Ken Barber <ken@bob.sh>