Description of problem:
When a host is registered, its Owner is not set to the admin that generated the registration command. It stays set to a hidden API user, Owner is displayed as Anonymous Admin.

Version-Release number of selected component (if applicable):
Reproduced in Sat Stream (6.15) and 6.14.0

How reproducible:
Deterministic

Steps to Reproduce:
1. On a Satellite, have a manifest and RHEL + Client repos synced and an AK
2. In WebUI, got to Hosts -> Register
3. Set insecure, select the AK
4. Generate
5. On the host, run the generated command
6. In Hosts -> All hosts, see the Owner column

Actual results:
The host is registered and everything works well but the Owner is set to Anonymous Admin:

1. hammer host info --name <FQDN> | grep -i owner
   Owner: Anonymous Admin
   Owner Id: 1
   Owner Type: User

Expected results:
I think the user who actually ran the registration process should be set as owner.