Override mox in sys.modules to mox3 in a py3 env

partial blueprint heat-python34-support

Change-Id: Iabb0435254ce07163f979160b312fc0e5d9e8a97

contrib/rackspace/heat_keystoneclient_v2/__init__.py

@@ -0,0 +1,7 @@
+import six
+
+
+if six.PY3:
+    from mox3 import mox
+    import sys
+    sys.modules['mox'] = mox

contrib/rackspace/rackspace/tests/__init__.py

@@ -0,0 +1,7 @@
+import six
+
+
+if six.PY3:
+    from mox3 import mox
+    import sys
+    sys.modules['mox'] = mox

heat/tests/__init__.py

@@ -12,6 +12,13 @@
 #    under the License.
 
 import oslo_i18n as i18n
+import six
+
+
+if six.PY3:
+    from mox3 import mox
+    import sys
+    sys.modules['mox'] = mox
 
 
 def fake_translate_msgid(msgid, domain, desired_locale=None):

test-requirements.txt

@@ -8,6 +8,7 @@ coverage>=3.6
 discover
 mock>=1.0
 mox>=0.5.3
+mox3>=0.7.0
 PyMySQL>=0.6.2 # MIT License
 oslosphinx>=2.5.0 # Apache-2.0
 oslotest>=1.5.1 # Apache-2.0