Bug 33996: Add missing authority objects mapping

Bug 33996: Add missing authority objects mapping

This patch adds a minimal mapping (i.e. some things get excluded from
the API objects for now). It makes some attributes consistent with the
current API names, and the rest can be added later when they become
needed and we discuss a proper name. But right now is a mess :-/

To test:
1. Apply this patch
2. Run:
   $ ktd --shell
  k$ prove t/db_dependent/api/v1/authorities.t
=> SUCCESS: Tests pass!
3. Sign off :-D

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Sam Lau <samalau@gmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 3b0fc1fc41ce540a3f1373ec3d0e8aa84a31c046)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>