1. Add license for python file 2. Update the policy for all services Change-Id: I4bc6a68874afe1cc51da1a24d278165356d5dec3
1. add barbican related policy 2. add barbican into service_mapping 3. add releatenote for barbican 4. update releatenote for zun and magnum Change-Id: I366e4482617654baab9091736e6f2b186aed6371