include heat_policy.json
include heat_policy.json

If heat-dashboard plugin is enabled, user will encounter an ugly no permssion to
access project error upon logging into Horizon. This error is caused by the
absence of heat_policy.json in Horizon. Per

https://github.com/openstack/heat-dashboard/blob/master/devstack/plugin.sh#L17-#L26

We need to make heat_policy.json available to Horizon before the plugin is
usable.

Change-Id: I93c9ca0077a85f881e7247e502f9e52ed7180f14

openstack/rpm-packaging,openstack/rpm-packaging