Revert a change to remove imports of the types module from __init__.py (#78)

Author: crwilcox

dialogflow_v2/__init__.py

@@ -14,6 +14,7 @@
 
 from __future__ import absolute_import
 
+from dialogflow_v2 import types
 from dialogflow_v2.gapic import agents_client
 from dialogflow_v2.gapic import contexts_client
 from dialogflow_v2.gapic import entity_types_client

dialogflow_v2beta1/__init__.py

@@ -14,6 +14,7 @@
 
 from __future__ import absolute_import
 
+from dialogflow_v2beta1 import types
 from dialogflow_v2beta1.gapic import agents_client
 from dialogflow_v2beta1.gapic import contexts_client
 from dialogflow_v2beta1.gapic import documents_client

synth.py

@@ -42,9 +42,6 @@
 
     code_paths = ['tests/unit/gapic/**/*.py',
                   f'dialogflow_{version}/**/*.py']
-                  #,
-                  #f'dialogflow_{version}/__init__.py'
-                  #f'dialogflow_{version}/types.py']
 
     s.replace(
         code_paths, 'import google.cloud.dialogflow', 'import dialogflow')
@@ -72,12 +69,6 @@
     "# Copyright 2018 Google LLC",
     "# -*- coding: utf-8 -*-\n\g<0>")
 
-# __init__.py has an import that isn't used and causes errors
-s.replace(
-    ['dialogflow_v2/__init__.py', 'dialogflow_v2beta1/__init__.py'],
-    'from dialogflow_.*? import types\n',
-    '')
-
 # Docstring has an extra '\' at the end of it
 s.replace(
     'dialogflow_v2/gapic/agents_client.py',