Updated openstack/openstack
Project: openstack/horizon  56eca7ef0e0d39c984b03fdec7a2c5279f35cbf1

Updated tenant_id to project_id in policy.py

Comments were referring to tenant_id where code says project_id

Closes-Bug: #1371017

Change-Id: I72f6c092f405fe130ca2c7430b7c00b70fb4abc8