Update requirements, fix testsuite

Manually update from global requirements.
Remove obsolete docutils pin.
Regenerate climate config file.
Fix testsuite for testtools change.
Workaround PYTHONHASHSEED setting in tox, disable for now so that tests
always pass.

Change-Id: I8c4a458371b28c91c5b848094e56038a16d6afc3