Updated openstack/openstack
Project: openstack/heat  c0a9a0dd03bdbe3f6b8e5455ff84eef8078fe94b

Allow empty sections in the yaml templates

Existing check for absent sections in template is not enough for
handling situation with empty content.
Current patch improves using default value for parameters, resources and
outputs sections in yaml templates.

Change-Id: I94b572bf5f5b1593276616d9d0a84386dd12b8fe
Closes-Bug: #1312114