Manila tempest jobs are broken - Need to switch to using tempest.lib over tempest_lib

[Goutham Pacha Ravi]

The project tempest-lib is being deprecated and all of the code is moving back into tempest. See README in [1] and the associated commit in [2].

This commit in neutron-fwaas changed to using tempest.lib from tempest_lib in [3]

Due to this, we need to move to the latest commit of tempest (or something that works) and stop using tempest-lib in Manila as well.

[1] https://github.com/openstack/tempest-lib/commit/781aec763e6f46f070c960e5e19a4c0d5be1ecb8
[2] https://review.openstack.org/#/c/283691/
[3] https://review.openstack.org/#/c/286453/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/287574

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/287574
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=4368c98b71a16b58e020e28dc65301260cac156b
Submitter: Jenkins
Branch: master

commit 4368c98b71a16b58e020e28dc65301260cac156b
Author: Ben Swartzlander <email address hidden>
Date: Wed Mar 2 22:16:23 2016 -0500

    Update tempest commit and switch to tempest.lib

    tempest_lib was renamed to tempest.lib which causes problems
    when running tests because tempest imports plugins from other
    projects and crashes.

    Closes bug: 1552520

    Change-Id: Id7d43dee256856062bd0dadad9c469c1500ee36e