Extract values: multiple non-empty target type in route

[fxaguessy]

Syncing infra failed when a route targets to a NetworkInterface and Instance.

ex:

[info] cannot resolve resource - running full sync
Error: extract values: multiple non-empty target type in route {
  DestinationCidrBlock: "0.0.0.0/0",
  InstanceId: "i-8fxxxxxx",
  InstanceOwnerId: "xxxxxxxxxx",
  NetworkInterfaceId: "eni-a5xxxxxx",
  Origin: "CreateRoute",
  State: "active"
}