skip negative tests of server metadata

[Ken'ichi Ohmichi]

Tempest contains some negative tests that send long metadata to "create a server" API of Nova v3 API.
Now the API returns an OverLimit response, but it will be changed to BadRequest by https://review.openstack.org/#/c/67824/ .

So we need to skip these tests temporary for its Jenkins tests.
After the merger of https://review.openstack.org/#/c/67824/ , the skip should be removed.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/69793

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/69793
Committed: https://git.openstack.org/cgit/openstack/tempest/commit/?id=6f10e80e587f863d95ef4cc0720f921e2ec99d47
Submitter: Jenkins
Branch: master

commit 6f10e80e587f863d95ef4cc0720f921e2ec99d47
Author: Ken'ichi Ohmichi <email address hidden>
Date: Wed Jan 29 23:07:21 2014 +0900

    Skip negative tests of v3 server metadata

    If sending long metadata to "create a server" API of Nova v3 API,
    the API returns an OverLimit response now.

    However the commit Ic17d2227909c9180ca86c9d578dad4c73ec57dfc will
    change the response to BadRequest. To verify the commit on Jenkins,
    it is necessary to skip the tests related to long metadata temporary.

    Change-Id: Ic03c2247505780fbeda68e908298a98862ea0c7c
    Related-Bug: #1273948

[Ken'ichi Ohmichi (oomichi)]

Now Nova v3 API tests are removed already, so we don't need to work for this more.