Sheepdog Driver: failed to check sheepdog cluster's status

[Kai Zhang]

Current implementation of check_for_setup_error() in sheepdog driver checks sheepdog cluster's status by finding "running" from
the splits of outputs from "collie cluster info" command.

However, as sheepdog has been upgraded, this method is not valid.

We should update it so that sheepdog driver can get the correct status of sheepdog cluster.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/34689

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/34689
Committed: http://github.com/openstack/cinder/commit/039dce71d43bd69181b2502cda17f941c95f9497
Submitter: Jenkins
Branch: master

commit 039dce71d43bd69181b2502cda17f941c95f9497
Author: Kai Zhang <email address hidden>
Date: Thu Jun 27 00:31:36 2013 -0700

    Fix check_for_setup_error for sheepdog driver

    Current implementation of check_for_setup_error() of sheepdog driver
    cannot work correctly with the latest version of sheepdog cluster.
    This patch fixes it and adds tests for both old and new version.

    Fixes: bug #1195098
    Change-Id: Ia710789e4bedd7c83cd47eff6b2fc532af39d94a