IAM Additional Services (#10)

* Add/archive ignore (#1)

* Adds exclude_files option to archive

The undocumented excludes option to acrhive file is extremely helpful
when you have test code included in the same directory as the lambda

hashicorp/terraform-provider-archive#55

* Fix default values for archive ignore

* Adds the ability to trigger the lambda from additional sources such as
API Gateway

Co-authored-by: nozaq <[email protected]>

Author: damacus