1. Proposed title of this feature request
Ability to assign a role to a node without a MAC address
2. What is the nature and description of the request?
In agent-based installation (OCI Platform) We need an ISO to boot before we get a MAC address so it's not possible to add a role with the below configuration as it needs MAC Address.
- hostname: master-0
    role: master
    interfaces:
     - name: enp1s0
       macAddress: aa:bb:dc:dd:a8:01
3. Why does the customer need this? (List the business requirements here)
The hosts have different configurations and need a way to define a role for the host to ensure proper resource utilization. 
4. List any affected packages or components.
Installer, Agent-based Installation.