Random failure of test_clean_volumes_after_reset

[Alexander Kislitsky]

Test test_clean_volumes_after_reset is randomly failed on CI and on development environment.
This affects the review/merge process. In case of close Feature Freeze an Technical Preview this failures became critical.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/131713

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/131713
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=0490b92a69166d88c7a4737ee8973264e07ee131
Submitter: Jenkins
Branch: master

commit 0490b92a69166d88c7a4737ee8973264e07ee131
Author: Sebastian Kalinowski <email address hidden>
Date: Wed Oct 29 12:48:13 2014 +0100

    Fix random fails of test_clean_volumes_after_reset

    Wait for deployment and reset task to finish to prevent situation
    when not all task has been completed.
    Also more reliable way of simulating disk change has been used.

    Change-Id: I18e92081994f2f0204710edebbf8aeaaec8b5bce
    Closes-Bug: #1387066

[Nastya Urlapova (aurlapova)]

https://fuel-jenkins.mirantis.com/job/verify-fuel-web/3986/testReport/nailgun.test.unit.test_node_disks/TestNodeDisksHandlers/test_clean_volumes_after_reset/history/?