Sync Azure `terraform` module with reference architecture

[nandajavarma]

TODOs

• Update the get-kubeconfig in tests for azure to use terraform output

[lucasvaltl]

Blocked until we actually have the azure reference architectures :)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.