Fixes bug in normalize_load_balancers when getting load balancer names
Adds unit tests Rivet::AwsAutoscaleWrapper
Added additional LaunchConfig options
Unit tests now work with new LaunchConfig options
Bootstrapping of VPC instances is now supported

* Normalizing of subnets now uses ids for proper local/remote comparison
* Verification of security groups is excluded for VPC security groups ids
* Group options now update using all values regardless of diff unless nil
Fixes unit tests for subnet related changes