v2.2.1: Attach to NLB using PrivateIP rather than InstanceID (#211)
* Attach to NLB using PrivateIP This is to attach to NLBs using the instance PrivateIP rather than the InstanceID to get around https://aws.amazon.com/premiumsupport/knowledge-center/target-connection-fails-load-balancer// Required by #3906 * Update CHANGELOG.md