Description of problem: Provisioning API for the Discovery is broken returns

"error":

Version-Release number of selected component (if applicable): 6.14.0 snap 16

How reproducible: 100%

Steps to Reproduce:
1. Have a discovered host and try to provision via API

curl --request PUT --insecure --header "Content-Type:application/json" --user admin:changeme https://dhcp-x-abc.vms.sat.rdu2.redhat.com/api/v2/discovered_hosts/10

{
"error":

}

Actual results: Error is thrown as stated above

Expected results: Provisioning of host should be initiated.

Additional info: