docker do not support docker 1.13 in gate

[Jeffrey Zhang]

docker do not support docker 1.13 in gate.

/docker file is create in gate. But docker 1.13 will create /docker folder. So docker run container failed in gate.

here is upstream bug: https://github.com/docker/docker/issues/30586

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/429587

[Eduardo Gonzalez (egonzalez90)]

As referenced in docker bug report [1] the bug was fixed by [2]
Can we remove the pin to 1.12 in gates?

[1] https://github.com/moby/moby/issues/30586
[2] https://github.com/moby/moby/pull/29846

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/480212
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=ae79f7bb7c0d10d51a46992221ca3ae20a4ad294
Submitter: Jenkins
Branch: master

commit ae79f7bb7c0d10d51a46992221ca3ae20a4ad294
Author: Jeffrey Zhang <email address hidden>
Date: Tue Jul 4 22:26:24 2017 +0800

    Use latest docker engine in gate

    Kolla support latest docker engine right now.

    Closes-Bug: #1661549
    Change-Id: I5074fd16bdd158df8e97f909dead0a59a14fdf42

[OpenStack Infra (hudson-openstack)]

Change abandoned by Jeffrey Zhang ([e-mail]) on branch: master
Review: https://review.openstack.org/429587

[OpenStack Infra (hudson-openstack)]

Change abandoned by Jeffrey Zhang ([e-mail]) on branch: master
Review: https://review.openstack.org/428577

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 5.0.0.0b3 development milestone.

[Jeffrey Zhang (jeffrey4l)]

master code is fixed by https://review.openstack.org/482763