Update notes for submitted changes

* Fix bugs 1335928 and 1335930. a. Add support for:    1. object-values in contrail-logs to determine the object-id values       for a particular object-type    2. where * support for object logs in contrail-logs - user can       just specify object-type without object-id    3. prefix support for object-id - specified using <prefix*> in       object-id b. Refactor start_time, end_time, last parsing code to use the    relative time support and move parsing common code to opserver_utils