Container validator unit tests fail for non localhost host_href

[Elvin Tubillara]

The following unit tests fail when host_href in /etc/barbican.conf is not set to 'localhost:9311':

FAIL:barbican.tests.api.controllers.test_containers.WhenCreatingContainersUsingContainersResource.test_should_throw_exception_when_secret_ref_doesnt_exist
FAIL: barbican.tests.common.test_validators.WhenTestingContainerValidator.test_should_validate_all_fields
FAIL: barbican.tests.common.test_validators.WhenTestingContainerValidator.test_should_validate_empty_name
FAIL: barbican.tests.common.test_validators.WhenTestingContainerValidator.test_should_validate_no_name

This problem appears when devstack is setup on virtualbox and the following appears in /etc/barbican.conf:
host_href = http://10.0.2.15:9311

A quick hack is to change the host_href to 'localhost:9311' and run the tests again. But I think the tests should be changed themselves to accommodate the host_href variable.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/234398

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/234398
Committed: https://git.openstack.org/cgit/openstack/barbican/commit/?id=526e7bd05f078db08fc87ab7ace8efc728384e6c
Submitter: Jenkins
Branch: master

commit 526e7bd05f078db08fc87ab7ace8efc728384e6c
Author: edtubill <email address hidden>
Date: Tue Oct 13 11:44:10 2015 -0500

    Change unit tests in test_utils.py and test_contaiers.py to use CONF.set_override

    On some machines that have devstack installed, the host_href variable
    inside /etc/barbican.conf is set to a non 'http://localhost' value
    (http://10.0.2.15 for virtualbox). When test_utils.py sets the host_href
    variable, it causes other tests to fail because it causes set_override
    to not work. When test_validators overrides the host_href variable it gets
    back the CONF variable (non localhost value) instead of
    the override. To fix this problem, test_utils.py should
    also use set_override and use clear_override. The tests inside
    test_containers are also missing the set_override and clear_override.

    Change-Id: Icb24737ad1cda097803fe30a5a000f8591f183f4
    Closes-bug: #1505315