[testActionManager] Add missing initialization of DBClientConfig in test_checkEventsWithMultipleIncidentSender()
[testActionManager] Remove checking action status in test_checkEventsWithMultipleIncidentSender()

Because it may be advanced to ACTLOG_STAT_STARTED by other thread.
[DBClientUser] Add a workaround to disable initial users

Because current tests doesn't consider about initial users.
Merge pull request #356 from project-hatohol/fix-broken-tests-20140808

Fix broken tests.
Thank you for your quick fixes.