Python 3 compatibility: convert raw_input to input
Python 3 compatibility: convert raw_input to input

Change-Id: I86699cc6d880c137e80183d7196874ec0f7893e7
Closes-Bug: #1797760

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates