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, 10 insertions, 8 deletions

diff --git a/tests/unit/benchmark/scenarios/compute/test_memload.py b/tests/unit/benchmark/scenarios/compute/test_memload.py
index cdf518d82..76625ef11 100644
--- a/tests/unit/benchmark/scenarios/compute/test_memload.py
+++ b/tests/unit/benchmark/scenarios/compute/test_memload.py
@@ -11,6 +11,7 @@
 
 # Unittest for yardstick.benchmark.scenarios.compute.memload.MEMLoad
 
+from __future__ import absolute_import
 import mock
 import unittest
 import os
@@ -74,15 +75,17 @@ class MEMLoadTestCase(unittest.TestCase):
         mock_ssh.SSH().execute.return_value = (0, output, '')
         result = m._get_mem_usage()
         expected_result = {"max": {"used": 76737332, "cached": 67252400,
-                           "free": 187016644, "shared": 2844,
-                           "total": 263753976, "buffers": 853528},
+                                   "free": 187016644, "shared": 2844,
+                                   "total": 263753976, "buffers": 853528},
                            "average": {"used": 76737332, "cached": 67252400,
-                           "free": 187016644, "shared": 2844,
-                           "total": 263753976, "buffers": 853528},
+                                       "free": 187016644, "shared": 2844,
+                                       "total": 263753976, "buffers": 853528},
                            "free": {"memory0": {"used": "76737332",
-                           "cached": "67252400", "free": "187016644",
-                           "shared": "2844", "total": "263753976",
-                           "buffers": "853528"}}}
+                                                "cached": "67252400",
+                                                "free": "187016644",
+                                                "shared": "2844",
+                                                "total": "263753976",
+                                                "buffers": "853528"}}}
         self.assertEqual(result, expected_result)
 
     def _read_file(self, filename):
@@ -91,4 +94,3 @@ class MEMLoadTestCase(unittest.TestCase):
         with open(output) as f:
             sample_output = f.read()
         return sample_output
-