Moved spidermanager tests module according to policies

--HG--
rename : scrapy/tests/test_contrib_spidermanager/__init__.py => scrapy/tests/test_spidermanager/__init__.py
rename : scrapy/tests/test_contrib_spidermanager/test_spiders/__init__.py => scrapy/tests/test_spidermanager/test_spiders/__init__.py
rename : scrapy/tests/test_contrib_spidermanager/test_spiders/spider0.py => scrapy/tests/test_spidermanager/test_spiders/spider0.py
rename : scrapy/tests/test_contrib_spidermanager/test_spiders/spider1.py => scrapy/tests/test_spidermanager/test_spiders/spider1.py
rename : scrapy/tests/test_contrib_spidermanager/test_spiders/spider2.py => scrapy/tests/test_spidermanager/test_spiders/spider2.py
rename : scrapy/tests/test_contrib_spidermanager/test_spiders/spider3.py => scrapy/tests/test_spidermanager/test_spiders/spider3.py

scrapy/tests/test_spidermanager/__init__.py

@@ -57,9 +57,9 @@ class SpiderManagerTest(unittest.TestCase):
             ['spider3'])
 
     def test_load_spider_module(self):
-        self.spiderman.load(['scrapy.tests.test_contrib_spidermanager.test_spiders.spider1'])
+        self.spiderman.load(['scrapy.tests.test_spidermanager.test_spiders.spider1'])
         assert len(self.spiderman._spiders) == 1
 
     def test_load_base_spider(self):
-        self.spiderman.load(['scrapy.tests.test_contrib_spidermanager.test_spiders.spider0'])
+        self.spiderman.load(['scrapy.tests.test_spidermanager.test_spiders.spider0'])
         assert len(self.spiderman._spiders) == 0