Bug 34313: Add patron information in pass validation response

Bug 34313: Add patron information in pass validation response

This patch makes the password validation response return the following
patron attributes to the API consumer:

* cardnumber
* userid

This will give hints on what was used to validate in the fallback
bahvior the endpoint has.

To test:
1. Apply the unit tests patch
2. Run:
   $ ktd --shell
  k$ prove t/db_dependent/api/v1/password_validation.t
=> FAIL: The endpoint doesn't return this valuable data
3. Apply this patch
4. Repeat 2
=> SUCESS: Tests pass! We got the cardnumber and the userid!
5. Sign off :-D

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 749783debf95abd69410c62f119627564ae092ed)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>