tox -edocs requires a running mongodb instance

[Flavio Percoco]

Currently the docs generation requires a running database instance. This is likely caused by zaqar.transport.wsgi.app, which requires a running db instance.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/217652

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/217652
Committed: https://git.openstack.org/cgit/openstack/zaqar/commit/?id=8207a69951fd3545d6fba3384cad2149bdb38a4f
Submitter: Jenkins
Branch: master

commit 8207a69951fd3545d6fba3384cad2149bdb38a4f
Author: Flavio Percoco <email address hidden>
Date: Thu Aug 27 13:34:43 2015 +0200

    Don't generate docs for zaqar.transport.wsgi.app

    We've been generating docs for the `zaqar.transport.wsgi.app` module,
    which tries to create an instance of the wsgi transport, which then
    tries to create an instance of the data controller and connect to the
    database.

    This module does not contain any docs and we shouldn't require a running
    DB instance to generate these docs.

    Change-Id: Id1c3cabc61a790bc0e5cccb22e660c933788ded8
    Closes-bug: #1489426

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/218072