Tempest tests do not wait when deleting access rules

[Alin Balutoiu]

The tests targeting user based access rules do not wait when deleting such access rules. As multiple tests will create access rules for the same user, this operation will fail if the previous rule was not deleted in time.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/217624

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/217624
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=ddb276f6299f41d231e016765f4b4a84019e7fe4
Submitter: Jenkins
Branch: master

commit ddb276f6299f41d231e016765f4b4a84019e7fe4
Author: Alin Balutoiu <email address hidden>
Date: Thu Aug 27 12:35:32 2015 +0300

    Tempest: wait for access rule to be deleted

    The tests targeting user based access rules do not wait when
    deleting such access rules. As multiple tests will create access
    rules for the same user, this operation will fail if the previous
    rule was not deleted in time.

    This patch fixes those tests by waiting for the access rule delete
    operation to complete.

    The wait_for_resource_deletion method is updated to work with
    access rules, re-adding previously existing functionality, removed
    as unused and also requested by bug/1429952.

    Closes-Bug: #1489367

    Change-Id: Ie48fba56668ad663be84b74cd64927e3e5d6c675