There is 1 breaking change. The OpsWorks Update API no longer supports
`tenancy` as an update. So that has to be marked as ForceNew: true
```
% make testacc TEST=./builtin/providers/aws
% TESTARGS='-run=TestAccAWSOpsworksInstance'
% 2 ↵ ✹ ✭
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/01/02 17:11:29 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v
-run=TestAccAWSOpsworksInstance -timeout 120m
=== RUN TestAccAWSOpsworksInstance
--- PASS: TestAccAWSOpsworksInstance (99.89s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws99.911s
```
* CloudFront implementation v3
* Update tests
* Refactor - new resource: aws_cloudfront_distribution
* Includes a complete re-write of the old aws_cloudfront_web_distribution
resource to bring it to feature parity with API and CloudFormation.
* Also includes the aws_cloudfront_origin_access_identity resource to generate
origin access identities for use with S3.
