Test discovery is broken for the api and functional paths

[Maru Newby]

The following failures in test discovery were noted:

https://review.openstack.org/#/c/169962/
https://bugs.launchpad.net/neutron/+bug/1443480

It was eventually determined that the use of the unittest discovery mechanism to perform manual discovery in package init for the api and functional subtrees was to blame.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/171874
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=4000b18275112a0c9e3aa055fbaea634ac89a382
Submitter: Jenkins
Branch: master

commit 4000b18275112a0c9e3aa055fbaea634ac89a382
Author: Maru Newby <email address hidden>
Date: Fri Apr 17 23:49:09 2015 +0000

    Fix test discovery for api and functional paths

    The use of the builtin unittest test loader was silently dropping tests
    that couldn't be imported.

    This change also drops the retargetable path from discovery in the api
    path due to a previously-masked configuration problem, and fixes an
    invalid import in a functional testing fixture module.

    Fullstack tests are also disabled temporarily pending a fix for #1446261.

    Change-Id: Ie44e45c117bd864538e7919dfcf499091fde7752
    Related-Bug: #1440834
    Related-Bug: #1443480
    Closes-Bug: #1446405

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/178301

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: neutron-pecan
Review: https://review.openstack.org/185072

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/178301
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=ae5ffa3f9febea198be580c60fcd83e492c26547
Submitter: Jenkins
Branch: stable/kilo

commit ae5ffa3f9febea198be580c60fcd83e492c26547
Author: Maru Newby <email address hidden>
Date: Fri Apr 17 23:49:09 2015 +0000

    Fix test discovery for api and functional paths

    The use of the builtin unittest test loader was silently dropping tests
    that couldn't be imported.

    This change also drops the retargetable path from discovery in the api
    path due to a previously-masked configuration problem, and fixes an
    invalid import in a functional testing fixture module.

    Fullstack tests are also disabled temporarily pending a fix for #1446261.

    Note:
    - fullstack tests are not really working in Kilo, so it's fine to
      disable them for the branch.

    Change-Id: Ie44e45c117bd864538e7919dfcf499091fde7752
    Related-Bug: #1440834
    Related-Bug: #1443480
    Closes-Bug: #1446405
    (cherry picked from commit 4000b18275112a0c9e3aa055fbaea634ac89a382)