Fix empty json file bug (do not reset the json results in the cleanup)
Fix empty json file bug (do not reset the json results in the cleanup)

Change-Id: I3eab9f3509322b1ba9f1d15d5daddff8c45f0336

openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster