Feature Overview (aka. Goal Summary)  

Add support for the Installer to configure IPV4Subnet to customize internal OVN network in BYO VPC on Azure.

Goals (aka. expected user outcomes)

As an OpenShift user, I'm able to provide IPv4 subnets to the Installer so I can customize the OVN networks at install time

Requirements (aka. Acceptance Criteria):

The Installer will allow the user to provide the information via the install config manifest and this information will be used at install time to configure the OVN network and deploy the cluster into an existing VPC provided by the user. 

Background

This is a requirement for ARO.

Documentation Considerations

As any other option for the Installer this will be documented as usual.

Implementation Considerations

Terraform is used for creating or referencing VPCs