Update requirements from opentack/requirements

- sync requirements with global openstack requirements;
- fix flake8 errors.

Change-Id: I7430367726708787fc068e18506fbbb117d23952

requirements.txt

@@ -1,7 +1,7 @@
 # Packages needed for using this library.
 pbr>=0.5.21,<1.0
 anyjson>=0.3.3
-iso8601>=0.1.4
+iso8601>=0.1.8
 # Python 2->3 compatibility library.
 six>=1.4.1
 # Only needed if database backend used.
@@ -11,7 +11,7 @@ alembic>=0.4.1
 networkx>=1.8
 Babel>=1.3
 # Used for backend storage engine loading.
-stevedore>=0.10
+stevedore>=0.12
 # Backport for concurrent.futures which exists in 3.2+
 futures>=2.1.3
 # Only needed if the eventlet executor is used.

taskflow/tests/unit/test_storage.py

@@ -81,7 +81,7 @@ class StorageTest(test.TestCase):
         flow_detail.add(td)
 
         s = storage.Storage(backend=self.backend, flow_detail=flow_detail)
-        self.assertEquals('42', s.get_task_uuid('my_task'))
+        self.assertEqual('42', s.get_task_uuid('my_task'))
 
     def test_ensure_existing_task(self):
         _lb, flow_detail = p_utils.temporary_flow_detail(self.backend)
@@ -90,7 +90,7 @@ class StorageTest(test.TestCase):
 
         s = storage.Storage(backend=self.backend, flow_detail=flow_detail)
         s.ensure_task('my_task')
-        self.assertEquals('42', s.get_task_uuid('my_task'))
+        self.assertEqual('42', s.get_task_uuid('my_task'))
 
     def test_save_and_get(self):
         s = self._get_storage()

test-requirements.txt

@@ -1,4 +1,4 @@
-hacking>=0.5.6,<0.8
+hacking>=0.8.0,<0.9
 discover
 coverage>=3.6
 mock>=1.0