Correct statusbot vcsrepo typo.

Change-Id: I927092d57c61922405e2dd9a14c34514fd6a21f0
Reviewed-on: https://review.openstack.org/25762
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins