* adding secrets manager vpc end point support

* adding config vpc end point support

* adding codebuild, codecommit and git-codecommit vpc end point support

* adding transfer server vpc end point support

* run terraform 0.12upgrade

* Cleanup for Terraform 0.12 (closes #265, #228)

* add ecs vpc endpoints

* add ecs vpcendpoints outputs

* add ecs vpc endpoints to readme inputs/outputs table

* add ecs vpc endpoints to readme endpoint list

* Improving DHCP options docs

* generating README from variables description

* Add Output Of Subnet ARNs

Facilitates resource access manager, subnet sharing across accounts

* Update Readme For Subnet ARN Output

I need in my policy generator the arn of vpc so I would like to include this