Bug 16216: Circulation_Branch.t doesn't set itemtype for test data

Bug 16216: Circulation_Branch.t doesn't set itemtype for test data

This patch makes the tests create better data for them:
- Run
  $ prove t/db_dependent/Circulation_Branch.t
=> FAIL: Warnings raised
- Apply the patch
- Run
  $ prove t/db_dependent/Circulation_Branch.t
=> SUCCESS: No warnings raised
- Sign off

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

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>