packging: Pass full log path to database schema creation script

Don't pass a relative path to database schema creation script, as it will
create the log file under current directory.

Change-Id: Iceb095d05473f41da4fa56eadc6e60da14056ac2
Bug-Url: https://bugzilla.redhat.com/1040026
Signed-off-by: Ofer Schreiber <oschreib@redhat.com>