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, 6 insertions, 4 deletions

diff --git a/yardstick/vTC/apexlake/experimental_framework/packet_generators/dpdk_packet_generator.py b/yardstick/vTC/apexlake/experimental_framework/packet_generators/dpdk_packet_generator.py
index 6dc32b671..959003628 100644
--- a/yardstick/vTC/apexlake/experimental_framework/packet_generators/dpdk_packet_generator.py
+++ b/yardstick/vTC/apexlake/experimental_framework/packet_generators/dpdk_packet_generator.py
@@ -12,12 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import os
-import base_packet_generator
-import experimental_framework.common as common
 import time
+
+
+import experimental_framework.common as common
 from experimental_framework.constants import conf_file_sections as conf_file
 from experimental_framework.constants import framework_parameters as fp
+from experimental_framework.packet_generators import base_packet_generator
 
 
 class DpdkPacketGenerator(base_packet_generator.BasePacketGenerator):
@@ -186,8 +189,7 @@ class DpdkPacketGenerator(base_packet_generator.BasePacketGenerator):
                     conf_file.CFSP_DPDK_PROGRAM_NAME,
                     conf_file.CFSP_DPDK_COREMASK,
                     conf_file.CFSP_DPDK_MEMORY_CHANNEL]:
-            if var not in variables.keys() or (var in variables.keys() and
-               variables[var] is ''):
+            if variables.get(var, '') == '':
                 raise ValueError("The variable " + var + " does not exist")
 
     @staticmethod