unittests cannot be run without installation

[Monty Taylor]

Due to the move of glance-manage to entrypoints, it's now not possible to run glance's unittests in a non-installed location, which makes things awkward for packagers.

Eventually, glance manage should be able to be importable so that we could just use it - but this is prevented by the global oslo.config object. Until that gets fixed, a workaround is to make glance.cmd.manage able to be run via python -m and then execute that via sys.executable so that we ensure it picks up the current running python (in case of virtualenvs)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/35044

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/35044
Committed: http://github.com/openstack/glance/commit/bc8e71acfc7b7794cc4c078c2717e226b05b9525
Submitter: Jenkins
Branch: master

commit bc8e71acfc7b7794cc4c078c2717e226b05b9525
Author: Monty Taylor <email address hidden>
Date: Sun Jun 30 16:51:18 2013 +0000

    Use python module loading to run glance-manage

    Executing glance-manage in a unittest context means that we need
    to install glance first, which breaks packaging workflow.

    Fixes bug 1196275.

    Change-Id: Idf0a332c2f2ffd3eb96d3623c32cf5383a0d9887