Move chunked head redirect test to ext

tests/test_requests.py

@@ -797,10 +797,5 @@ class RequestsTestSuite(TestSetup, unittest.TestCase):
         r = requests.get(httpbin('status', '404'))
         r.text
 
-    def test_chunked_head_redirect(self):
-        u = "http://t.co/NFrx0zLG"
-        r = requests.head(u, allow_redirects=True)
-        self.assertEqual(r.status_code, 200)
-
 if __name__ == '__main__':
     unittest.main()

tests/test_requests_ext.py

@@ -53,6 +53,12 @@ class RequestsTestSuite(unittest.TestCase):
         url = u'http://blip.fm/~1abvfu'
         requests.get(url)
 
+
+    def test_chunked_head_redirect(self):
+        url = "http://t.co/NFrx0zLG"
+        r = requests.head(url, allow_redirects=True)
+        self.assertEqual(r.status_code, 200)
+
 if __name__ == '__main__':
     unittest.main()