Support batch build

[kanata2]

CodeBuild now supports conccurent/coordinated builds in a project with batch build.

https://docs.aws.amazon.com/codebuild/latest/userguide/batch-build.html

[w0rmr1d3r]

Do we have any update on this?

[zoraaver]

Is there an update on this? Batch builds would be really useful to avoid starting multiple codebuild jobs in parallel from Jenkins (which can be problematic when there are lot, e.g. 50+). Thank you