No need to remove container in Rally job

[Dongcan Ye]

Sometimes, Rally job failed with following trace info:
APIError: 500 Server Error: Internal Server Error ("Unable to remove filesystem for 504497d9b4bff9261df8a1fadbee970c39a6fcf1071b431768cf97f7ecfd467d: remove /var/lib/docker/containers/504497d9b4bff9261df8a1fadbee970c39a6fcf1071b431768cf97f7ecfd467d/shm: device or resource busy")

This is a bug in Docker side, in my opinion we can disable remove_container in rally job.

There are lots of similar bug links, like:
https://github.com/docker/docker/issues/20560
https://github.com/docker/docker/issues/22260
https://github.com/docker/docker/issues/21704

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/404591

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/404591
Committed: https://git.openstack.org/cgit/openstack/kuryr-libnetwork/commit/?id=8e7f70db472343c80cf45227a36894e32067c1a1
Submitter: Jenkins
Branch: master

commit 8e7f70db472343c80cf45227a36894e32067c1a1
Author: Dongcan Ye <email address hidden>
Date: Wed Nov 30 15:12:29 2016 +0800

    Temporary cleanup remove_container method in Rally job

    Change-Id: I9979b69446615e2bdbcdb0c7ad0dc5858925a36a
    Closes-Bug: #1646005