* ec2_instance/ec2_instance_info : Fixup sanity test errors
* Move ec2_instance integration tests to use aws_defaults
* Search for the AMI instead of hardcoding an AMI
* Make our VPC CIDR variable
* Remove AZ assumptions - no guarantees about specific AZs being available
* Make sure we terminate instances when we're done with them.
* Add a 10 second pause for IAM roles to become available before using them
* Wait on instance changes by default
* Switch out t2 instances for t3 they're cheaper and have more CPU available
* Pull t3.nano instance info a little earlier
* rework vpc_name and vpc_cidr a little
* Mark ec2_instance tests unsupported for now, they take too long
