ccoctl azure delete leaks role assignments

Azure managed identity role assignments created using 'ccoctl azure' sub-commands are not cleaned up when running 'ccoctl azure delete'

4.14.0

100%

1. Create Azure workload identity infrastructure using 'ccoctl azure create-all'
2. Delete Azure workload identity infrastructure using 'ccoctl azure delete'
3. Observe lingering role assignments in either the OIDC resource group if not deleted OR in the DNS Zone resource group if the OIDC resource group is deleted by providing '--delete-oidc-resource-group'. 

Role assignments for managed identities are not deleted following 'ccoctl azure delete'

Role assignments for managed identities are deleted following 'ccoctl azure delete'