Add a tox job to run stress tests.

This adds a tox job that will run the stress tests. It first runs the
server create destroy test for an hour followed by running the volume
create destroy test for another hour.

Change-Id: I75dae72baa3f1e0bac90fb96ba293fd7c76679b3

tox.ini

@@ -61,6 +61,14 @@ commands =
    nosetests --logging-format '%(asctime)-15s %(message)s' --with-xunit --xunit-file=nosetests-full.xml -sv tempest/api tempest/scenario tempest/thirdparty tempest/cli
    python -m tools/tempest_coverage -c report --html {posargs}
 
+[testenv:stress]
+sitepackages = True
+setenv = VIRTUAL_ENV={envdir}
+commands =
+    python -m tempest/stress/run_stress tempest/stress/etc/sample-test.json -d 60
+    python -m tempest/stress/run_stress tempest/stress/etc/volume-create-delete-test.json -d 60
+
+
 [testenv:venv]
 commands = {posargs}
 deps = -r{toxinidir}/requirements.txt