history: Fixed sleep time for delete/aggregations

Fixed sleep time for interations of
DeleteTimeKeepingJob,HourlyTimeKeepingJob
and DailyTimeKeepingJob so it will run
at the correct time.

Change-Id: I1a1a05400812b41fa70bf618c03afb72a606f525
Bug-Url: https://bugzilla.redhat.com/1086389
Signed-off-by: Shirly Radco <sradco@redhat.com>