[VOL-4445] Correct error type to proceed with deletion with half route

Also moving deletion of logical device and meters to correct place in transitions.go

Change-Id: I9eee03edba9ae47ec09fc3b752082a740ee0efde
diff --git a/rw_core/core/device/state/transitions.go b/rw_core/core/device/state/transitions.go
index 7a28a83..55b7b59 100644
--- a/rw_core/core/device/state/transitions.go
+++ b/rw_core/core/device/state/transitions.go
@@ -158,13 +158,13 @@
 			deviceType:    parent,
 			previousState: deviceState{Admin: voltha.AdminState_UNKNOWN, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_ANY},
 			currentState:  deviceState{Admin: voltha.AdminState_UNKNOWN, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_FORCE_DELETING},
-			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllLogicalMeters, dMgr.DeleteAllChildDevices, dMgr.DeleteLogicalDevice, dMgr.RunPostDeviceDelete}})
+			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllChildDevices, dMgr.DeleteAllLogicalMeters, dMgr.RunPostDeviceDelete}})
 	transitionMap.transitions = append(transitionMap.transitions,
 		transition{ //DELETE device after adapter response
 			deviceType:    parent,
 			previousState: deviceState{Admin: voltha.AdminState_UNKNOWN, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_ANY},
 			currentState:  deviceState{Admin: voltha.AdminState_UNKNOWN, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_DELETING_POST_ADAPTER_RESPONSE},
-			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllLogicalMeters, dMgr.DeleteAllChildDevices, dMgr.DeleteLogicalDevice, dMgr.RunPostDeviceDelete}})
+			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllChildDevices, dMgr.DeleteAllLogicalMeters, dMgr.RunPostDeviceDelete}})
 	transitionMap.transitions = append(transitionMap.transitions,
 		transition{ //DELETE no operation transition
 			deviceType:    parent,
@@ -176,13 +176,13 @@
 			deviceType:    parent,
 			previousState: deviceState{Admin: voltha.AdminState_ENABLED, Connection: voltha.ConnectStatus_REACHABLE, Operational: voltha.OperStatus_ACTIVE, Transient: voltha.DeviceTransientState_NONE},
 			currentState:  deviceState{Admin: voltha.AdminState_ENABLED, Connection: voltha.ConnectStatus_UNREACHABLE, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_NONE},
-			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllLogicalMeters, dMgr.DeleteAllChildDevices, dMgr.DeleteLogicalDevice, dMgr.DeleteAllDeviceFlows}})
+			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllChildDevices, dMgr.DeleteAllLogicalMeters, dMgr.DeleteLogicalDevice, dMgr.DeleteAllDeviceFlows}})
 	transitionMap.transitions = append(transitionMap.transitions,
 		transition{
 			deviceType:    parent,
 			previousState: deviceState{Admin: voltha.AdminState_DISABLED, Connection: voltha.ConnectStatus_REACHABLE, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_NONE},
 			currentState:  deviceState{Admin: voltha.AdminState_DISABLED, Connection: voltha.ConnectStatus_UNREACHABLE, Operational: voltha.OperStatus_UNKNOWN, Transient: voltha.DeviceTransientState_NONE},
-			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllLogicalMeters, dMgr.DeleteAllChildDevices, dMgr.DeleteLogicalDevice, dMgr.DeleteAllDeviceFlows}})
+			handlers:      []transitionHandler{dMgr.DeleteAllLogicalPorts, dMgr.DeleteAllChildDevices, dMgr.DeleteAllLogicalMeters, dMgr.DeleteLogicalDevice, dMgr.DeleteAllDeviceFlows}})
 	transitionMap.transitions = append(transitionMap.transitions,
 		transition{
 			deviceType:    parent,
diff --git a/rw_core/core/device/state/transitions_test.go b/rw_core/core/device/state/transitions_test.go
index 69a7568..63f9c87 100644
--- a/rw_core/core/device/state/transitions_test.go
+++ b/rw_core/core/device/state/transitions_test.go
@@ -208,8 +208,8 @@
 		voltha.DeviceTransientState_NONE)
 	assert.Equal(t, 5, len(handlers))
 	assert.True(t, reflect.ValueOf(tdm.DeleteAllLogicalPorts).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.DeleteAllLogicalMeters).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.DeleteAllChildDevices).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteAllChildDevices).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteAllLogicalMeters).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
 	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalDevice).Pointer() == reflect.ValueOf(handlers[3]).Pointer())
 	assert.True(t, reflect.ValueOf(tdm.DeleteAllDeviceFlows).Pointer() == reflect.ValueOf(handlers[4]).Pointer())
 
@@ -226,8 +226,8 @@
 		voltha.DeviceTransientState_NONE)
 	assert.Equal(t, 5, len(handlers))
 	assert.True(t, reflect.ValueOf(tdm.DeleteAllLogicalPorts).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.DeleteAllLogicalMeters).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.DeleteAllChildDevices).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteAllChildDevices).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteAllLogicalMeters).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
 	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalDevice).Pointer() == reflect.ValueOf(handlers[3]).Pointer())
 	assert.True(t, reflect.ValueOf(tdm.DeleteAllDeviceFlows).Pointer() == reflect.ValueOf(handlers[4]).Pointer())
 
@@ -330,9 +330,8 @@
 		},
 		expectedParentHandlers: []transitionHandler{
 			tdm.DeleteAllLogicalPorts,
-			tdm.DeleteAllLogicalMeters,
 			tdm.DeleteAllChildDevices,
-			tdm.DeleteLogicalDevice,
+			tdm.DeleteAllLogicalMeters,
 			tdm.RunPostDeviceDelete,
 		},
 		expectedChildHandlers: []transitionHandler{
@@ -349,7 +348,7 @@
 			t.Run(testName, func(t *testing.T) {
 				handlers = transitionMap.getTransitionHandler(ctx, device, previousDevice, voltha.DeviceTransientState_FORCE_DELETING,
 					voltha.DeviceTransientState_ANY)
-				assert.Equal(t, 5, len(handlers))
+				assert.Equal(t, 4, len(handlers))
 				for idx, expHandler := range deleteDeviceTest.expectedParentHandlers {
 					assert.True(t, reflect.ValueOf(expHandler).Pointer() == reflect.ValueOf(handlers[idx]).Pointer())
 				}