DEFAULT_DOCKER_TIMEOUT =10 is too short

[Eli Qiao]

In Magnum code, we hard code it as DEFAULT_DOCKER_TIMEOUT = 10
This bring troubles in some bad networking environment (or bad performance swarm master)
At least it doesn't work on our gate.

Here is the test patch on gate https://review.openstack.org/249522 , I set it as 180 to make sure
the failure it due to time_out parameter passed to docker client, but we need to chose a suitble one

I check docker client's default value,

DEFAULT_TIMEOUT_SECONDS = 60,
suggest we set DEFAULT_DOCKER_TIMEOUT
as long as our rpc time_out.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/249682

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/250573

[OpenStack Infra (hudson-openstack)]

Change abandoned by Eli Qiao (<email address hidden>) on branch: master
Review: https://review.openstack.org/249682
Reason: will be fixed by https://review.openstack.org/250573

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/250573
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=292a195242abb02f62642987b451096795cc0ba0
Submitter: Jenkins
Branch: master

commit 292a195242abb02f62642987b451096795cc0ba0
Author: Hua Wang <email address hidden>
Date: Fri Nov 27 09:43:31 2015 +0800

    Remove hardcoded default docker client setting

    This patch removes Hardcoded docker client settings and move them to configure
    setting. Changes default value of DEFAULT_DOCKER_TIMEOUT from 10 to 60.

    DEFAULT_DOCKER_TIMEOUT = 10 is too short, it brings troubles in some bad
    networking environment (or bad performance swarm master), and this won't work
    on gate.

    The docker-py client's default value: DEFAULT_TIMEOUT_SECONDS = 60,
    Suggest we set DEFAULT_DOCKER_TIMEOUT = 60, as long as our rpc time_out.

    There is a circle reference between magnum/common/docker_utils.py and
    magnum/conductor/handlers/common/docker_client.py, so I merge them.

    Co-Authored-By: Eli Qiao <email address hidden>

    Change-Id: I6046376cbf5eec6b0102956fd4e4f38b958dd80c
    Closes-Bug: #1519714

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/magnum 2.0.0 release.