Updated openstack/openstack
Project: openstack/heat  76c6ce4c3ca7191006cfe244030f90c55192f6ce

clients make heat_url public

Make the heat_url helper function public, so it can be used inside resources
which require a heat endpoint URL, e.g to pass to an instance for signalling.

blueprint: native-waitcondition
Change-Id: If351066e9ad68d2e19dee955d5e9de87f527e17d