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, 8 insertions, 5 deletions

diff --git a/api/server.py b/api/server.py
index 8cce4de87..5bac1ba47 100644
--- a/api/server.py
+++ b/api/server.py
@@ -6,17 +6,20 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
-import logging
-from itertools import ifilter
+from __future__ import absolute_import
+
 import inspect
+import logging
+from functools import reduce
+from six.moves import filter
 
+from flasgger import Swagger
 from flask import Flask
 from flask_restful import Api
-from flasgger import Swagger
 
 from api.database import Base
-from api.database import engine
 from api.database import db_session
+from api.database import engine
 from api.database import models
 from api.urls import urlpatterns
 from yardstick import _init_logging
@@ -44,7 +47,7 @@ def init_db():
             pass
         return False
 
-    subclses = ifilter(func, inspect.getmembers(models, inspect.isclass))
+    subclses = filter(func, inspect.getmembers(models, inspect.isclass))
     logger.debug('Import models: %s', [a[1] for a in subclses])
     Base.metadata.create_all(bind=engine)