Variable untemplated_dirs has been added to allow for
defining directories under kayobe/kolla/config which should be copied
instead of templated by kolla-openstack role.

This is needed to support custom themes for horizon -
change If9982c8e18be31772cb031ef72b7eebd4d768be5

Change-Id: I350f58c8a82f0f31608b34054e804c5c198d6806