User Story:

As a user, I want to be able to:

• specify nutanix platform in install-config.yaml
• read hiveext.NutanixPlatformType from assisted service
• validate the nutanix platform , similar to vSphere , for example. Validate fields such as 
  PrismCentral, PrismElements , ?
• warn optional/unused/irrelevant nutanix platform fields like other platforms
•  

so that I can achieve

• successful agent ISO creation
•  
•  

Acceptance Criteria:

Description of criteria:

• Upstream documentation
• Point 1
• Point 2
• Point 3

(optional) Out of Scope:

Detail about what is specifically not being delivered in the story

Engineering Details:

• (optional) https://github/com/link.to.enhancement/
• (optional) https://issues.redhat.com/link.to.spike
• Engineering detail 1
• Engineering detail 2

This requires/does not require a design proposal.
This requires/does not require a feature gate.