Description of problem:

Version-Release number of selected component (if applicable):
Satellite 6.15.0 Snap 3.0

How reproducible:
Always

Steps to Reproduce:
1. # hammer settings set --id host_owner --value 'admin'
Could not update the setting:
Value Host owner is invalid

2. # curl -X PUT -k -H 'Content-Type: application/json' -H 'Authorization: Basic <token>=' -i 'https://satellite.example.com/api/v2/settings/host_owner' --data '

'

Actual results:
Updating setting host_owner fails with "Value Host owner is invalid"

Expected results:
Updating setting host_owner works for admin user or any created user

Additional info: