Move queues' unittests under tests/unit/queues/

This patch moves queues' unit tests under a queues package to reflect
Marconi's source structure.

Change-Id: Ibe009aba89d615333b8626c73008c55ee3face8f

tests/unit/proxy/base.py

@@ -21,7 +21,7 @@ from wsgiref import simple_server
 from falcon import testing as ftest
 
 from marconi.proxy import app
-from tests.unit.transport.wsgi import base
+from tests.unit.queues.transport.wsgi import base
 
 
 class TestBase(base.TestBase):

tests/unit/queues/storage/test_impl_mongodb.py

@@ -28,7 +28,7 @@ from marconi.queues.storage.mongodb import controllers
 from marconi.queues.storage.mongodb import options as mongodb_options
 from marconi.queues.storage.mongodb import utils
 from marconi import tests as testing
-from marconi.tests.storage import base
+from marconi.tests.queues.storage import base
 
 
 class MongodbUtilsTest(testing.TestBase):

tests/unit/queues/storage/test_impl_sqlite.py

@@ -16,7 +16,7 @@
 from marconi.queues import storage
 from marconi.queues.storage import sqlite
 from marconi.queues.storage.sqlite import controllers
-from marconi.tests.storage import base
+from marconi.tests.queues.storage import base
 
 
 class SQliteQueueTests(base.QueueControllerTest):