Move unit tests into tests.unit

keystonemiddleware should get functional testing eventually like
the other keystone repos, so move the existing (unit) tests to
keystonemiddelware.tests.unit.

Change-Id: I7d5b1120fc5dc225fdd037b592a7914bde3f1ac2

keystonemiddleware/tests/unit/auth_token/test_auth_token_middleware.py

@@ -47,8 +47,8 @@ from keystonemiddleware.auth_token import _base
 from keystonemiddleware.auth_token import _exceptions as exc
 from keystonemiddleware.auth_token import _revocations
 from keystonemiddleware.openstack.common import memorycache
-from keystonemiddleware.tests import client_fixtures
-from keystonemiddleware.tests import utils
+from keystonemiddleware.tests.unit import client_fixtures
+from keystonemiddleware.tests.unit import utils
 
 
 EXPECTED_V2_DEFAULT_ENV_RESPONSE = {

keystonemiddleware/tests/unit/client_fixtures.py

@@ -25,7 +25,7 @@ import testresources
 
 
 TESTDIR = os.path.dirname(os.path.abspath(__file__))
-ROOTDIR = os.path.normpath(os.path.join(TESTDIR, '..', '..'))
+ROOTDIR = os.path.normpath(os.path.join(TESTDIR, '..', '..', '..'))
 CERTDIR = os.path.join(ROOTDIR, 'examples', 'pki', 'certs')
 CMSDIR = os.path.join(ROOTDIR, 'examples', 'pki', 'cms')
 KEYDIR = os.path.join(ROOTDIR, 'examples', 'pki', 'private')

keystonemiddleware/tests/unit/test_connection_pool.py

@@ -18,7 +18,7 @@ import testtools
 from testtools import matchers
 
 from keystonemiddleware import _memcache_pool
-from keystonemiddleware.tests import utils
+from keystonemiddleware.tests.unit import utils
 
 
 class _TestConnectionPool(_memcache_pool.ConnectionPool):

keystonemiddleware/tests/unit/test_opts.py

@@ -16,7 +16,7 @@ import pkg_resources
 from testtools import matchers
 
 from keystonemiddleware import opts
-from keystonemiddleware.tests import utils
+from keystonemiddleware.tests.unit import utils
 
 
 class OptsTestCase(utils.TestCase):

keystonemiddleware/tests/unit/test_s3_token_middleware.py

@@ -21,7 +21,7 @@ import testtools
 import webob
 
 from keystonemiddleware import s3_token
-from keystonemiddleware.tests import utils
+from keystonemiddleware.tests.unit import utils
 
 
 GOOD_RESPONSE = {'access': {'token': {'id': 'TOKEN_ID',