Socket related unit tests fail on FreeBSD

[Roman Bogorodskiy]

Due to different behavior of SO_REUSEADDR on Linux and BSD some unit tests fail, e.g.:

nova.tests.unit.test_wsgi.TestWSGIServer.test_socket_options_for_simple_server
------------------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "nova/tests/unit/test_wsgi.py", line 140, in test_socket_options_for_simple_server
        socket.SO_REUSEADDR))
      File "/usr/home/novel/code/openstack/nova/.tox/py27/lib/python2.7/site-packages/testtools/testcase.py", line 350, in assertEqual
        self.assertThat(observed, matcher, message)
      File "/usr/home/novel/code/openstack/nova/.tox/py27/lib/python2.7/site-packages/testtools/testcase.py", line 435, in assertThat
        raise mismatch_error
    testtools.matchers._impl.MismatchError: 1 != 4

Captured pythonlogging:
~~~~~~~~~~~~~~~~~~~~~~~
    2015-06-20 17:32:52,230 INFO [nova.wsgi] test_socket_options listening on 127.0.0.1:60566

Similar (or I'd say the same) problem was reported and fixed for OS X: https://bugs.launchpad.net/nova/+bug/1436895

[Roman Bogorodskiy (novel)]

Proposed fix: https://review.openstack.org/#/c/191522/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/191522
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=d0b103d699c13a9d282fbaa2047118f575955d52
Submitter: Jenkins
Branch: master

commit d0b103d699c13a9d282fbaa2047118f575955d52
Author: Roman Bogorodskiy <email address hidden>
Date: Sat Jun 13 21:13:34 2015 +0300

    Skip SO_REUSEADDR tests on BSD

    Commit e9c48d5 fixed socket tests issues on OSX related to
    SO_REUSEADDR that were reported in bug #1436895. The same behaviour
    applies to BSD as well, so make this fix more general and run the
    tests on Linux only.

    Closes-bug: #1467145
    Change-Id: I09c2969658c4716d06b22513d321006f31d57baa