Bug 15199: t/db_dependent/Review.t should not depend on existing data

Bug 15199: t/db_dependent/Review.t should not depend on existing data

This patch makes the tests create a branch and a patron category instead
of searching for them on the DB.

To test:
- Apply the patch on current master
- Run
  $ prove t/db_dependent/Review.t
=> SUCCESS: Tests pass
- Sign off

Signed-off-by: Hector Castro <hector.hecaxmmx@gmail.com>
All test pass successful

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>