Add a controlling TTY for ausearch

The ausearch command required a controlling TTY in order to finish
execution propely.  This fix adds the '-t' flag to the ssh command
used in the log-collector

Signed-off-by: James W. Mills <jamills@redhat.com>
Bug-Url: https://bugzilla.redhat.com/1010472
Change-Id: I5b7b04c037d44c6d699db670d1d98b0db678fccf