Support create container with existing neutron port

[hongbin]

Allow user to pre-create neutron port(s) and use those existing port(s) to create container

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/483113

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/483113
Committed: https://git.openstack.org/cgit/openstack/zun/commit/?id=019055e56b27f596593d34547750d73b72609a56
Submitter: Jenkins
Branch: master

commit 019055e56b27f596593d34547750d73b72609a56
Author: Hongbin Lu <email address hidden>
Date: Wed Jul 12 22:08:16 2017 +0000

    Move get_available_network to API layer

    In before, if there is no network available, users don't know what is
    wrong until the container is scheduled to a compute node and fail.
    This commit moves the searching of neutron net to zun-api so that
    users will receive an error response earlier if the request is
    invalid.

    Change-Id: Ic9fd47c6e4aff4131ebaad73a3bed0f51eeb118c
    Related-Bug: #1702581

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/481861
Committed: https://git.openstack.org/cgit/openstack/zun/commit/?id=648a9cdaaa9ae0461e2f4072d68f6bad3a232d43
Submitter: Jenkins
Branch: master

commit 648a9cdaaa9ae0461e2f4072d68f6bad3a232d43
Author: Hongbin Lu <email address hidden>
Date: Sat Jul 8 22:25:20 2017 +0000

    Implement create with existing neutron port

    Support creating container with existing neutron port. Users
    can pass the uuid/name of an existing neutron port via the 'nets'
    parameter. If port is specified, Zun will use the existing port
    instead of creating a new port.

    If a container is deleted, its neutron port will be deleted regardless
    of existing or not. A future work is to determine if the port is
    pre-existing and avoid deleting existing port.

    Closes-Bug: #1702581
    Change-Id: I204b4bbe3de9e275690c4a64acdfe557f134b7ee

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/zun 0.2.0 release.