change external_interface to br_ext and internal_interface to br_int
change external_interface to br_ext and internal_interface to br_int

 - firewalls should be on the bridge interface, not the real interface

mantti/fgci-tut,mantti/fgci-tut,mantti/fgci-tut,A1ve5/fgci-ansible,CSC-IT-Center-for-Science/fgci-ansible