Fix 'openstack Named cloud devstack-admin requested' error

[Peter Stachowski]

The gate is broken in that devstack has changed the way images are uploaded: See https://github.com/openstack-dev/devstack/commit/31c313d3a35e1b222fdb3aa72993a27c288d10bb

This generates the following error in the trove gate-trove-functional-dsvm-mysql test:

ERROR: openstack Named cloud devstack-admin requested that was not found.
Glance upload failed!

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/226549

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/226576

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/226549
Committed: https://git.openstack.org/cgit/openstack/trove-integration/commit/?id=df6b68b494942d9263f9beb3438cce079e5019b3
Submitter: Jenkins
Branch: master

commit df6b68b494942d9263f9beb3438cce079e5019b3
Author: Peter Stachowski <email address hidden>
Date: Tue Sep 22 20:50:32 2015 +0000

    Fix glance image upload in the gate

    Glance in devstack was recently updated to rely on clouds.yaml instead
    of using tokens (change I7092fb10cbe243e091789134263fab081af0c7f4).

    This caused redstack to break in the gate as the file is written by
    devstack in the 'stack' user's home directory.

    Fixed this by linking the file from the 'stack' user's actual home
    directory to the jenkins user's home directory.

    Closes-Bug: #1498626
    Co-Authored-By: Nikhil Manchanda <email address hidden>
    Change-Id: Ida0aa155b1e1ec7b8e9fa73006d3db9a88ffea02

[OpenStack Infra (hudson-openstack)]

Change abandoned by Peter Stachowski (<email address hidden>) on branch: master
Review: https://review.openstack.org/226576
Reason: The link worked, so abandoning this