[VOL-1658] Address disable/delete of a device in Pre-prov state

This commit addresses the case where a user wants to disable a
preprovisioned device and also delete it.  It addresses part of the
issue raised by VOL-1658.

Change-Id: Iac8adf45070a234c5505ed800f77150d8ed85156
diff --git a/rw_core/core/device_state_transitions.go b/rw_core/core/device_state_transitions.go
index 5c52a8f..906c4e7 100644
--- a/rw_core/core/device_state_transitions.go
+++ b/rw_core/core/device_state_transitions.go
@@ -163,6 +163,12 @@
 			handlers:      []TransitionHandler{dMgr.NotifyInvalidTransition}})
 	transitionMap.transitions = append(transitionMap.transitions,
 		Transition{
+			deviceType:    any,
+			previousState: DeviceState{Admin: voltha.AdminState_PREPROVISIONED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
+			currentState:  DeviceState{Admin: voltha.AdminState_DELETED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
+			handlers:      []TransitionHandler{dMgr.RunPostDeviceDelete}})
+	transitionMap.transitions = append(transitionMap.transitions,
+		Transition{
 			deviceType:    parent,
 			previousState: DeviceState{Admin: voltha.AdminState_DISABLED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
 			currentState:  DeviceState{Admin: voltha.AdminState_DELETED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},