User Story:

As a user, I want to be able to:

• deploy control plane instances using UltraSSD storage
• based on parameter(s) in the install-config.yaml

so that I can achieve

• higher performance for certain workloads

Acceptance Criteria:

Description of criteria:

• An install-config.yaml parameter can be configured to enable UltraSSD disks on each control plane root volume.
• The install-config-yaml parameter is added to the explain sub-command.

(optional) Out of Scope:

• Dedicated disks for Etcd
• Compute instances
• Persistent Volumes

Engineering Details:

• https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/linux_virtual_machine#ultra_ssd_enabled
• https://docs.microsoft.com/en-us/rest/api/compute/virtual-machines/create-or-update#additionalcapabilities
•