Description of problem:
On CFME-5.11.1.1, using the bellow rest api request, I managed to enable a RHV running VM, that contain a RHEL-7.6 OS, without the required virt-v2v repos or packages. The enable process took ~1 minute, much shorter than a valid  Conversion host enable would normally take. 

I did not try to use it a conversion host, but I would expect it to fail.

Enable Conversion host api request:
==================================
URL: https://<cfme-fqdn>/api/conversion_hosts

Method: POST
Body:

{
    "action": "create",
    "resource": {
        "name": "<vm name>",
        "auth_user": "root",
        "conversion_host_ssh_private_key": "-----BEGIN PRIVATE KEY-----...-----END PRIVATE KEY-----",
        "max_concurrent_tasks": 10,
        "resource_id": "39",    
        "resource_type": "ManageIQ::Providers::Redhat::InfraManager::Vm",
        "vmware_vddk_package_url": "http://...VMware-vix-disklib-stable.tar.gz"
    }
}

Version-Release number of selected component (if applicable):
CFME-5.11.1.1
RHV-4.3.7

Expected results:
The Enable conversion host should have failed, on missing repos/packages.

Additional info:
On CFME-5.11.1.