Update notes for submitted changes

* 1. Adding contrail-hamon upstart script to start the galera cluster and haproxy monitoring scripts. 2. Moving supervisord config files fron contrail-vrouter-init to contrail-openstack-vrouter 3. Fix supervisor-openstack upstart to chwon cinder dir only if cinder is installed. Change-Id: I89b013340354af68b9548bfe57fee66f1f299303