Fix DateTime tests that failed due to recent DateTime changes that removed assumption of UTC TZ. Fixes: https://bugs.launchpad.net/bugs/1324441. Set process on proxy object when launched via fixture (LP:1327377). Fixes: https://bugs.launchpad.net/bugs/1327377. Add link to url troubleshooting guide when state not found error is raise. Update docs version number in sphinx config. Update Apparmor rules.