Remove admin user for PR working

[Dina Belova]

We should use only trusts for working with os services - I mean no special climate_username, etc. is needed.

[Dina Belova (dbelova)]

Sylvain, please reassign this bug if it's not comfortable for you to fix it.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/84158

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/84158
Committed: https://git.openstack.org/cgit/stackforge/blazar/commit/?id=c9b7307cf3c97d3b48878aca6eda5b7fbc4dcfa7
Submitter: Jenkins
Branch: master

commit c9b7307cf3c97d3b48878aca6eda5b7fbc4dcfa7
Author: Pablo Andres Fuente <email address hidden>
Date: Thu Mar 13 16:54:46 2014 -0300

    Added use of trusts to Physical Host plugin

    Now the physical host plugin uses trusts to communicate with Nova.

    Added a decorator in order to create a trust in certain API calls.
    Added the trust_id to the ComputeHost model. Added a DB migration for
    this change and a unit test for it.
    Added the MissingTrustId exception, which is raised when no trust_id is
    provided to some methods of the RPC API.
    Removed all the configuration keys related to the admin Climate user.
    Modified NovaClientWrapper in order to use the information stored in
    context.

    Change-Id: I0b83a933c0d72871654f3c6252be5d5e2c4cfd54
    Closes-Bug: #1285585