Update hacking for Python3

The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.

Fix problems found.

Change-Id: I7dd841e8904a29d342e5f1968c272fafd2f5e5ac

sahara_tempest_plugin/services/data_processing/v1_1/__init__.py

@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
+# flake8: noqa: E501
+
 from sahara_tempest_plugin.services.data_processing.v1_1.data_processing_client import \
     DataProcessingClient
 

sahara_tempest_plugin/services/data_processing/v2/__init__.py

@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
+# flake8: noqa: E501
+
 from sahara_tempest_plugin.services.data_processing.v2.data_processing_client import \
     DataProcessingClient
 

sahara_tests/scenario/base.py

@@ -207,7 +207,8 @@ class BaseTestCase(base.BaseTestCase):
         if output_id is not None:
             output_url = self.sahara.get_datasource(
                 data_source_id=output_id).url
-        pl = lambda x: self._inject_datasources_data(x, input_url, output_url)
+        pl = lambda x: (  # noqa: E731
+            self._inject_datasources_data(x, input_url, output_url))
         args = list(map(pl, configs.get('args', [])))
         configs['args'] = args
         return configs

sahara_tests/scenario/runner.py

@@ -200,5 +200,6 @@ def main():
     testr_runner_exit_code = utils.run_tests(concurrency, test_dir_path)
     sys.exit(testr_runner_exit_code)
 
+
 if __name__ == '__main__':
     main()

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=0.12.0,!=0.13.0,<0.14 # Apache-2.0
+hacking>=3.0,<3.1.0 # Apache-2.0
 
 bandit!=1.6.0
 bashate>=0.2 # Apache-2.0