When deleting a host from Foreman, if foreman has the compute_resource_id and uuid of the related VM, the host.destroy will reach in and poweroff/delete the VM.

This should be a configuration setting, of whether to cleanup the VM or not on host removal from Foreman.

The current setting, in a production environment, could be dangerous since it's not a config that can be turned off. The user has to use the API to remove the uuid and compute_resource_id from a host object to stop the actions from happening.