RegistrationState type
The Azure Extended Zone registration status for a subscription
KnownRegistrationState can be used interchangeably with RegistrationState,
this enum contains the known values that the service supports.
Known values supported by the service
NotRegistered: Subscription not registered for the Azure Extended Zone
PendingRegister: Subscription pending registration for the Azure Extended Zone
Registered: Subscription is registered for the Azure Extended Zone
PendingUnregister: Subscription is pending unregistering for the Azure Extended Zone
type RegistrationState = string