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, 4 insertions, 2 deletions

diff --git a/yardstick/common/httpClient.py b/yardstick/common/httpClient.py
index 6acd0303d..11c2d752d 100644
--- a/yardstick/common/httpClient.py
+++ b/yardstick/common/httpClient.py
@@ -6,9 +6,11 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
-import json
+from __future__ import absolute_import
+
 import logging
 
+from oslo_serialization import jsonutils
 import requests
 
 logger = logging.getLogger(__name__)
@@ -17,7 +19,7 @@ logger = logging.getLogger(__name__)
 class HttpClient(object):
 
     def post(self, url, data):
-        data = json.dumps(data)
+        data = jsonutils.dump_as_bytes(data)
         headers = {'Content-Type': 'application/json'}
         try:
             response = requests.post(url, data=data, headers=headers)