Add functional tests launcher for py3 env

It would be nice to check not only unit test on py3 env, but functional
tests too.

Also, this patch fixes usage of xrange in functional tests.

Change-Id: I15ef204022583a40a02b3f2a48771347ddc95f3e

novaclient/tests/functional/api/test_servers.py

@@ -22,7 +22,7 @@ class TestServersAPI(base.ClientTestBase):
             server_name, self.image, self.flavor)
         self.addCleanup(initial_server.delete)
 
-        for x in xrange(60):
+        for x in range(60):
             server = self.client.servers.get(initial_server)
             if server.status == "ACTIVE":
                 break

novaclient/tests/functional/hooks/post_test_hook.sh

@@ -43,7 +43,7 @@ cd $NOVACLIENT_DIR
 echo "Running novaclient functional test suite"
 set +e
 # Preserve env for OS_ credentials
-sudo -E -H -u jenkins tox -efunctional
+sudo -E -H -u jenkins tox -e ${TOX_ENV:-functional}
 EXIT_CODE=$?
 set -e
 

tox.ini

@@ -35,6 +35,13 @@ commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasen
 
 
 [testenv:functional]
+basepython = python2.7
+setenv =
+  OS_TEST_PATH = ./novaclient/tests/functional
+commands = python setup.py testr --testr-args='--concurrency=1 {posargs}'
+
+[testenv:functional-py34]
+basepython = python3.4
 setenv =
   OS_TEST_PATH = ./novaclient/tests/functional
 commands = python setup.py testr --testr-args='--concurrency=1 {posargs}'