Set owner on /var/*/statusbot to statusbot.

Change-Id: I47dad06ea05ab403d294bbe27ee05dcec805ee1d
Reviewed-on: https://review.openstack.org/25764
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins