Enable customers to create and manage OpenShift clusters using managed identities for Azure resources for authentication.
A customer using ARO wants to spin up an OpenShift cluster with "az aro create" without needing additional input, i.e. without the need for an AD account or service principal credentials, and the identity used is never visible to the customer and cannot appear in the cluster.
Requirements
Add support to CCO for the Installation and Upgrade using both UPI and IPI methods with managed identities for Azure resources / Managed Service Identity (MSI).
Support the use of Operators with managed identities for Azure resources.
Support for HyperShift and non-HyperShift clusters.