Comment 5 for bug 1644901

Reviewed: https://review.openstack.org/418942
Committed: https://git.openstack.org/cgit/openstack/zun/commit/?id=2a0a7992b959f70696a6b086552d6fad33548584
Submitter: Jenkins
Branch: master

commit 2a0a7992b959f70696a6b086552d6fad33548584
Author: prameswar <email address hidden>
Date: Wed Jan 11 03:22:50 2017 +0000

    Added support for Auto remove the container

    Docker run command has an option that automatically
    removes the container when it exits. This commit introduces
    the equivalent in Zun. In particular, this commit does
    the followings:

    * Introduce an 'auto_remove' field in container. If this
      field is set, the container will be automatically
      removed when it exits.
    * Introduce a new container state 'Delete'. This states
      indicated that the container has been automatically
      removed, but the record is still existed in DB.
    * Bump the docker REST API version to 1.25 or higher
      since 'auto_remove' feature was introduced in 1.25.

    There are several future work of this commit. The first task is
    to add a tempest test to verify the container is indeed
    auto-removed in docker daemon. The second task is to introduce
    a periodic task that purge container in 'Deleted' state.

    Co-Authored-By: Hongbin Lu <email address hidden>
    Co-Authored-By: Kien Nguyen <email address hidden>
    Related-Bug: #1644901

    Change-Id: Ic6d35274a49648bde5e0e7486453a6d1a13f6f2e