An EC2 instance that is the target for load balancing.
If you register a target of this type, you are responsible for making sure the load balancer’s security group can connect to the instance.
Create a new Instance target.
str) – Instance ID of the instance to register to.
None]) – Override the default port for the target group.
Register this instance target with a load balancer.
Don’t call this, it is called automatically when you add the target to a load balancer.