Add py34 to readme, pkg metadata, and envlist

This commit adds references explaining the current state of python 3.4
and tempest to the readme, pkg metadata, and adds an etry to the tox
envlist for running the unit tests on python 3.4.

Change-Id: I9c1e3cdf53dbae723a9fee67ad96932709d2305f

README.rst

@@ -117,8 +117,8 @@ is OS_TEST_PATH=./tempest/test_discover which will only run test discover on the
 Tempest suite.
 
 Alternatively, you can use the run_tests.sh script which will create a venv and
-run the unit tests. There are also the py26, py27, or py33 tox jobs which will
-run the unit tests with the corresponding version of python.
+run the unit tests. There are also the py27 and py34 tox jobs which will run
+the unit tests with the corresponding version of python.
 
 Python 2.6
 ----------
@@ -131,3 +131,16 @@ present in python 2.6 will be used. If you're running your OpenStack services
 on an earlier release with python 2.6 you can easily run Tempest against it
 from a remote system running python 2.7. (or deploy a cloud guest in your cloud
 that has python 2.7)
+
+Python 3.4
+----------
+
+Starting during the Liberty release development cycle work began on enabling
+Tempest to run under both Python 2.7 and Python 3.4. Tempest strives to fully
+support running with Python 3.4. A gating unit test job was added to also run
+Tempest's unit tests under Python 3.4. This means that the Tempest code at
+least imports under Python 3.4 and things that have unit test coverage will
+work on Python 3.4. However, because large parts of Tempest are self verifying
+there might be uncaught issues running on Python 3.4. So until there is a gating
+job which does a full Tempest run using Python 3.4 there isn't any guarantee
+that running Tempest under Python 3.4 is bug free.

setup.cfg

@@ -15,6 +15,8 @@ classifier =
     Programming Language :: Python
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
 
 [entry_points]
 console_scripts =

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = pep8,py27
+envlist = pep8,py27,py34
 minversion = 1.6
 skipsdist = True