devstack fails to start with the driver

[Julien Vey]

While running devstack with the docker driver, everything copied and configured,
the installation fails with this error

ln -snf /opt/stack/nova-docker/etc/nova/rootwrap.d/docker.filters /opt/stack/nova/etc/nova/rootwrap.d/docker.filters
2014-04-17 13:56:36.814 | ln: failed to create symbolic link '/opt/stack/nova/etc/nova/rootwrap.d/docker.filters': No such file or directory

This is because nova has not yet been cloned into /opt/stack/nova.

I think a simple solution is to find a more adequate place for the 'ln -snf....' instruction

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/88382
Committed: https://git.openstack.org/cgit/stackforge/nova-docker/commit/?id=6cea7088374a68366ea6c5a57664919d054f6b77
Submitter: Jenkins
Branch: master

commit 6cea7088374a68366ea6c5a57664919d054f6b77
Author: Paul Czarkowski <email address hidden>
Date: Thu Apr 17 13:13:00 2014 -0500

    bugfix and cleanup of devstack contrib scripts

    rootwrap.d was being copied before nova was present
    break extras.d script into source vs install

    Closes-Bug: #1309490
    Change-Id: Ib424d328741c3200a54cf899683721d0ca64c38f