Changes to uploadIndexFile groovy library to update the latest build number for each distribution.

[Divyaasm]

Is your feature request related to a problem? Please describe

We are currently depending on a single index file which has latest build number information to retrieve a latest distribution artifact for a given version. The current implementation is restricting us to maintain latest at distribution level in situations where the the whole build job fails without updating latest build number even when single distribution stage fails.

Describe the solution you'd like

Maintain individual index.json files for each distribution separately along with the index.json we are currently maintaining. Each json file is related to a distribution is updated at corresponding stage.

• Idea is to store index.json files in subfolders for each distribution in the s3 bucket
• Add code changes to related groovy library to update the latest build number for each distribution type w.r.t to supported architectures to fetch the new index file path.

Additional context

[Divyaasm]

Closing as corresponding PR is merged