[System tests] Add more debug information to rollback test

[Andrey Sledzinskiy]

Add debug info to rollback test to understand on which stage does it fail

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/5.1
Review: https://review.openstack.org/136060

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/136265

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/136265
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=59ed6b399334d6786b7cef455165cdced97a1b1a
Submitter: Jenkins
Branch: master

commit 59ed6b399334d6786b7cef455165cdced97a1b1a
Author: asledzinskiy <email address hidden>
Date: Fri Nov 21 10:55:53 2014 +0200

    Add wait for rollback to finish

    - Add wait that all services are up after rollback
    - Add debug information to rollback tests

    Change-Id: I830d61550804526ef46fc08369d34a9bce8b6831
    Closes-Bug: #1394662

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/136060
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=cf2df4eaa388d3635dd3f1d74d943e6ad2d3f265
Submitter: Jenkins
Branch: stable/5.1

commit cf2df4eaa388d3635dd3f1d74d943e6ad2d3f265
Author: asledzinskiy <email address hidden>
Date: Thu Nov 20 19:06:45 2014 +0200

    Add debug messages to rollback tests to understand
    when test actually fails

    Change-Id: I4fdb01e89375679e62676bbc3a03f0370ace10ae
    Closes-Bug: #1394662