Update CHANGELOG

terraform: don't validate providers outside of modules if we don't have to

ec2/config: Use provided region instead of hardcoding us-west-2

provider/aws: Convert AWS Network Interface to aws-sdk-go

provider/aws: Convert EIP to use upstream aws-sdk-go

Convert AWS Internet Gateway to use upstream aws-sdk-go

provider/aws: Convert AWS Subnet to mainstream aws-sdk-go

provider/aws: Convert Key Pair to upstream aws-sdk-go

provider/aws: Change Route 53 record to allow resource updates

Fix #1394, network value for network_interface

provider/aws: Fix issue with Route 53 and pre-existing, external Hosted zones

Fix #1394, network value for network_interface isn't a computed value and there is no need to refresh it each time instance data is read

config/module: storage path should be independent of system

command/push: read terraform.tfvars

providers/aws: fix LCs being invalid in classic

reflect.DeepEqual was returning false, sometimes.

Turns out AssociatePublicIPAddress was always being set, but the AWS
APIs don't like that when you're launching into EC2 Classic and return a
validation error at ASG launch time.

Fixes #1410

Also adds sdk versions of structure, structure test

Remove Security Group owner_id argument from document