Test suite picks up configuration in ~/.glance

[John Bresnahan]

The test suite picks up information in ~/.glance. This causes unexpected behavior when debugging.

[Feilong Wang (flwang)]

Based on my observation, both ~/.glance and /etc/glance will cause this issue.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/116679
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=e66ecfee4eacfe25a18cd05d3f88e25c91fa112c
Submitter: Jenkins
Branch: master

commit e66ecfee4eacfe25a18cd05d3f88e25c91fa112c
Author: Louis Taylor <email address hidden>
Date: Mon Aug 25 16:34:47 2014 +0000

    Fix legacy tests using system policy.json file

    Steps to reproduce:

    1. Create a new file named '/etc/glance/policy.json' and inside it
    paste:

        {"context_is_admin": "role:admin"}

    2. Run tests. Some of the tests under glance.tests.integration
    .legacy_functional.test_v1_api will fail with errors such as
    'MismatchError: 403 != 201'. These tests will pass without policy.json
    in place.

    The outcome of the tests should be isolated from the surrounding
    environment, so this patch copies policy.json from glance's data files
    (glance/tests/etc/policy.json) into the tests directory to avoid this
    problem.

    Change-Id: I27903ee4ebb7bad243c4f1b2d01096bfb93f1008
    Closes-Bug: 1184056