v0.34.0

Integrated the changes from dome9 @bcoddens (#86)

What
Our codebuild environment needs double sources as input to build
Why
We use code that is based on gitlab , gitlab is not supported by codebuild so we need to upload zip files to support our codebuilds. We want to keep the config and source in a different upload.
These changes support using multiple s3 buckets as source
References
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/codebuild_project#secondary_sources
Proceed on pull request: #73