So we can add graphs in a readable form.
Change-Id: I8208e7f5e5ebe1b3432aaf2cd18dc0071f4882ea
Reviewed-on: https://review.openstack.org/18667
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins