Bug 36125: Adjust default HOLD_SLIP to use TT

Bug 36125: Adjust default HOLD_SLIP to use TT

To test:
1. Apply patch
2. reset_all (or start your testing environment in the first place)
3. Find a patron and make sure their account contains values for
   all of the following fields:
   First name
   Surname
   Card number
   Phone
   Address
   Address 2
   City
   Zipcode
   Email
4. Place a hold for this patron, specifying a hold note
5. Check in an item to fill the hold and click "Confirm and print slip"
6. Confirm that all information on the hold slip is correct

Signed-off-by: Barbara Johnson <barbara.johnson@bedfordtx.gov>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>