Correct overcloud template to inherit passthrough
Correct overcloud template to inherit passthrough

Inherit passthrough from nova-compute-instance.yaml, rather than
having an exact copy in overcloud-source.yaml.

Change-Id: I4f5a4a7be5835cb68755734aa72f8d9670cba0d4

dprince/tripleo-heat-templates,rdo-management/tripleo-heat-templates,trozet/opnfv-tht,rdo-management/tripleo-heat-templates,trozet/tripleo-heat-templates,redhat-openstack/tripleo-heat-templates,trozet/tripleo-heat-templates,bcrochet/tripleo-heat-templates,bcrochet/tripleo-heat-templates,redhat-openstack/tripleo-heat-templates,bcrochet/tripleo-heat-templates,openstack/tripleo-heat-templates,wyg3958/tripleo-heat-templates,dprince/tripleo-heat-templates,trozet/opnfv-tht,openstack/tripleo-heat-templates,trozet/opnfv-tht,wyg3958/tripleo-heat-templates