stop_ironic is called during upgrade process and it should not
clean any Ironic files, as they will be used after upgrade.
This patch moves cleaning ironic http configuration and qemu
hooks to cleanup_ironic function.
Co-Authored-By: Vladyslav Drok <vdrok@mirantis.com>
Change-Id: I45f2d23eb1e182a87fb41a79a3a7b7527948bf35