Updated openstack/openstack
Project: openstack/heat  fd60cdb23da17512d831c91a6f12fb3a21785ae9

Add "parameter_defaults" to the environment

This give the user a way to set defaults recursively down nested stacks
without having to create the parameter in every template (it's ignored
if the template does not have the parameter).

blueprint env-nested-usability
Change-Id: Ie6b4481417204a527d322fd532c341b9acbce473