Add support for Python 3

Porting to Python3 using Openstack guidelines:
https://wiki.openstack.org/wiki/Python3

This passes unittests on Python 3.5 and passes opnfv_smoke suite

Updates:
   use six for urlparse and urlopen
   fix exception.message attribute removal
   run unittests on python3
   use unitest.mock on python 3
   fix open mock for vsperf
   fix float division by using delta/eplison comparison
   use unicode in StringIO
   use plugin/sample_config.yaml relative path from test case
   fixed apexlake unittests
   upgraded to mock 2.0.0 to match python3 unittest.mock features
   fixed flake8 issues
   implement safe JSON decode with oslo_serialization.jsonutils.dump_as_bytes()
   implement safe unicode encode/decode with oslo_utils.encodeutils

heat: convert pub key file from bytes to unicode
    pkg_resources returns raw bytes, in python3
    we have to decode this to utf-8 unicode
    so JSON can encode it for heat template

JIRA: YARDSTICK-452

Change-Id: Ib80dd1d0c0eb0592acd832b82f6a7f8f7c20bfda
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/unit/benchmark/contexts/test_node.py b/tests/unit/benchmark/contexts/test_node.py
index 6939b8551..de5ba7066 100644
--- a/tests/unit/benchmark/contexts/test_node.py
+++ b/tests/unit/benchmark/contexts/test_node.py
@@ -11,6 +11,7 @@
 
 # Unittest for yardstick.benchmark.contexts.node
 
+from __future__ import absolute_import
 import os
 import unittest
 
@@ -21,6 +22,7 @@ class NodeContextTestCase(unittest.TestCase):
 
     NODES_SAMPLE = "nodes_sample.yaml"
     NODES_DUPLICATE_SAMPLE = "nodes_duplicate_sample.yaml"
+
     def setUp(self):
         self.test_context = node.NodeContext()