Treat enable_debug in Ansible as a bool
Treat enable_debug in Ansible as a bool

Without the extra bool this when block gets evaluated as a string.
Given that it is always present this means enable_debug has been
enabled regardless of the end user setting.

Change-Id: I9f53f3bca4a6862966e558ea20fe001eabda7bcf
Closes-bug: #1754481

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