Restructuring helpers dir (#886)

* PEP8 formatting & package structuring

* adding internal function imports into helpers init

* changed absolute paths for mock

* removed debugging print statements

* resolving @fxdgear 's comment

test_elasticsearch/test_helpers.py

@@ -26,7 +26,7 @@ mock_process_bulk_chunk.call_count = 0
 
 
 class TestParallelBulk(TestCase):
-    @mock.patch('elasticsearch.helpers._process_bulk_chunk', side_effect=mock_process_bulk_chunk)
+    @mock.patch('elasticsearch.helpers.actions._process_bulk_chunk', side_effect=mock_process_bulk_chunk)
     def test_all_chunks_sent(self, _process_bulk_chunk):
         actions = ({'x': i} for i in range(100))
         list(helpers.parallel_bulk(Elasticsearch(), actions, chunk_size=2))
@@ -34,14 +34,13 @@ class TestParallelBulk(TestCase):
         self.assertEquals(50, _process_bulk_chunk.call_count)
 
     @mock.patch(
-        'elasticsearch.helpers._process_bulk_chunk',
+        'elasticsearch.helpers.actions._process_bulk_chunk',
         # make sure we spend some time in the thread
         side_effect=lambda *a: [(True, time.sleep(.001) or threading.current_thread().ident)]
     )
     def test_chunk_sent_from_different_threads(self, _process_bulk_chunk):
         actions = ({'x': i} for i in range(100))
         results = list(helpers.parallel_bulk(Elasticsearch(), actions, thread_count=10, chunk_size=2))
-
         self.assertTrue(len(set([r[1] for r in results])) > 1)
 
 class TestChunkActions(TestCase):