Support assuming Entra ID App Registration Service Principals in Teleport Azure app access

What would you like Teleport to do?

Support Teleport Azure CLI access flow to allow to Teleport users assume a Register App Service Principal Identity via Teleport Azure CLI access flow.

If a workaround exists, please include it.

Create a new user-assigned managed identity, assign it the same Azure RBAC role assignments as the target App Registration SP, and configure Teleport's azure_identities to reference that managed identity.