Unable to install master nodes using Agent-based Installer when platform is set to none in install-config.yaml

Issue

• RHOCP documentation states "If none is used as a platform, the number of control plane replicas must be 1 and the total number of worker replicas must be 0."

• Preparing install-config.yaml for platform none with a value of 3 for .controlPlane.replicas displays the following error:

  WARNING Capabilities: %!!(MISSING)s(*types.Capabilities=<nil>) is ignored 
  ERROR failed to write asset (Agent Installer ISO) to disk: cannot generate ISO image due to configuration errors
  FATAL failed to fetch Agent Installer ISO: failed to load asset "Install Config": invalid install-config configuration: ControlPlane.Replicas: Required value: ControlPlane.Replicas must be 1 for none platform. Found 3 
  

• It looks like none platform takes into consideration only a single-node OpenShift Container Platform cluster (SNO)