High Priority
=============

  - Add http/json request module to make client tool work [Qiming]
  - Support action_create
  - Support action_delete
  - Support action_cancel
  - Support event_delete

Middle Priority
===============

  - Use code from https://review.openstack.org/#/c/95679/ to replace
    _append_global_identity_args(parser)

  - Migrate to openstacksdk when possible, since apiclient is deprecated
    * remove openstack/common/apiclient according to:
      https://review.openstack.org/#/c/134024/2
    * rebase on openstacksdk:
      https://launchpad.net/python-openstacksdk

  - Add unit tests

Low Priority
============