The event time displayed in log format is truncated, because the event
log formater of heatclient resolves the event_time string incorrectly.
Exchange the date and time fields splitted from event_time attribute,
and don't truncate the last character of time_date[1].
Closes-Bug: #1498283
Change-Id: If94093e2b0531a78c26ba9baeceafc19b61df5f8