fix(region): Don't allow address conflicts under vpc

Except for default vpc, vpc and wire have a one-to-one correspondence.
So prohibiting the address conflict of wire does not avoid
the address conflict of default vpc.

pkg/compute/models/networks.go

@@ -1449,12 +1449,12 @@ func (manager *SNetworkManager) ValidateCreateData(ctx context.Context, userCred
 		}
 	}
 	{
-		nets := manager.getAllNetworks(wire.Id, "")
-		if nets == nil {
-			return input, httperrors.NewInternalServerError("query all networks fail")
+		nets, err := vpc.GetNetworks()
+		if err != nil {
+			return input, httperrors.NewInternalServerError("fail to GetNetworks of vpc: %v", err)
 		}
 		if isOverlapNetworks(nets, ipStart, ipEnd) {
-			return input, httperrors.NewInputParameterError("Conflict address space with existing networks")
+			return input, httperrors.NewInputParameterError("Conflict address space with existing networks in vpc %q", vpc.GetName())
 		}
 	}
 

pkg/compute/models/vpcs.go

@@ -214,6 +214,16 @@ func (self *SVpc) getNetworkQuery() *sqlchemy.SQuery {
 	return q
 }
 
+func (self *SVpc) GetNetworks() ([]SNetwork, error) {
+	q := self.getNetworkQuery()
+	nets := make([]SNetwork, 0, 5)
+	err := db.FetchModelObjects(NetworkManager, q, &nets)
+	if err != nil {
+		return nil, errors.Wrap(err, "db.FetchModelObjects")
+	}
+	return nets, nil
+}
+
 func (self *SVpc) GetNetworkCount() (int, error) {
 	q := self.getNetworkQuery()
 	return q.CountWithError()