Use fixtures.TempDir directly.
Use fixtures.TempDir directly.

Change-Id: I02e20156af20cfc019262f39e343e3ec1ce06a85
Reviewed-on: https://review.openstack.org/35541
Reviewed-by: Jeremy Stanley <98883b97e35b7bb1ac282bb863f2e9d917db0454@yuggoth.org>
Reviewed-by: James E. Blair <e81a02a9d6405977f63a769d9f6ec8ed9d924325@inaugust.com>
Approved: James E. Blair <e81a02a9d6405977f63a769d9f6ec8ed9d924325@inaugust.com>
Tested-by: Jenkins

gooddata/zuul,wikimedia/integration-zuul,devdattakulkarni/zuul_messaging,devdattakulkarni/zuul_messaging,gooddata/zuul,gooddata/zuul,devdattakulkarni/zuul_messaging,gooddata/zuul,gooddata/zuul,wikimedia/integration-zuul,wikimedia/integration-zuul,wikimedia/integration-zuul