Updated openstack/openstack
Project: openstack/heat  a5dbe1a7f3793ff6287b9d147cbd99777e8b3327
null
Make context available during constraint validation

This makes context optionally available in properties and during
constraint validation, to be able to add more advanced constraints which
make API calls.

blueprint param-constraints

Change-Id: I6ec1d6bc952d82029638caea32567036e29e4881