Bug Fix: import from collections

The util decorators failed to import from collections.abc for
Py3 instead of collections (from Py2).

stackinabox/util/httpretty/decorator.py

@@ -4,7 +4,6 @@
 try:
     import collections.abc as collections
 except ImportError:
-    # Py2.7 Support
     import collections
 import functools
 import logging

stackinabox/util/requests_mock/decorator.py

@@ -4,7 +4,6 @@
 try:
     import collections.abc as collections
 except ImportError:
-    # Py2.7 Support
     import collections
 import functools
 import logging

stackinabox/util/responses/core.py

@@ -75,7 +75,8 @@ def registration(uri):
     for method in METHODS:
         responses.add_callback(method,
                                regex,
-                               callback=responses_callback)
+                               callback=responses_callback,
+                               content_type=None)
 
 
 @deprecator.DeprecatedInterface("responses_registration", "registration")

stackinabox/util/responses/decorator.py

@@ -4,7 +4,6 @@
 try:
     import collections.abc as collections
 except ImportError:
-    # Py2.7 Support
     import collections
 
 import functools

tests/util/httpretty/test_decorator.py

@@ -1,7 +1,10 @@
 """
 Stack-In-A-Box: Basic Test
 """
-import collections
+try:
+    import collections.abc as collections
+except ImportError:
+    import collections
 import sys
 import types
 import unittest

tests/util/requests_mock/test_decorator.py

@@ -1,7 +1,10 @@
 """
 Stack-In-A-Box: Basic Test
 """
-import collections
+try:
+    import collections.abc as collections
+except ImportError:
+    import collections
 import json
 import logging
 import types

tests/util/response/test_decorator.py

@@ -1,7 +1,11 @@
 """
 Stack-In-A-Box: Basic Test
 """
-import collections
+try:
+    import collections.abc as collections
+except ImportError:
+    import collections
+
 import json
 import logging
 import types